skstd -> std for unique_ptr

TBR=reed@google.com
No public API changes.

BUG=skia:4564

Committed: https://skia.googlesource.com/skia/+/755c553c17b82bb5de3d9cc8d3b2a866ff9e9e50

CQ_EXTRA_TRYBOTS=client.skia.compile:Build-Mac10.9-Clang-x86_64-Release-CMake-Trybot,Build-Ubuntu-GCC-x86_64-Debug-CrOS_Link-Trybot;client.skia:Perf-Mac10.9-Clang-MacMini6.2-CPU-AVX-x86_64-Release-Trybot,Test-iOS-Clang-iPad4-GPU-SGX554-Arm7-Release-Trybot

Committed: https://skia.googlesource.com/skia/+/06189155d987db5c7e69015f6ea87c2168d6a065

Committed: https://skia.googlesource.com/skia/+/70e8dfca4a7f5bce97b8021a6e378c4828b09c8c

Committed: https://skia.googlesource.com/skia/+/dadfc245cc9a0279ff7b73da3344f2ca5d139907
GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1436033003

Review URL: https://codereview.chromium.org/1436033003
diff --git a/gyp/core.gypi b/gyp/core.gypi
index ff1282f..2d1db60 100644
--- a/gyp/core.gypi
+++ b/gyp/core.gypi
@@ -409,7 +409,6 @@
         '<(skia_include_path)/private/SkTDict.h',
         '<(skia_include_path)/private/SkTSearch.h',
         '<(skia_include_path)/private/SkTLogic.h',
-        '<(skia_include_path)/private/SkUniquePtr.h',
         '<(skia_include_path)/private/SkWeakRefCnt.h',
 
         # Path ops
diff --git a/include/core/SkRefCnt.h b/include/core/SkRefCnt.h
index 9d1e5f1..1779278 100644
--- a/include/core/SkRefCnt.h
+++ b/include/core/SkRefCnt.h
@@ -9,8 +9,8 @@
 #define SkRefCnt_DEFINED
 
 #include "../private/SkAtomics.h"
-#include "../private/SkUniquePtr.h"
 #include "SkTypes.h"
+#include <memory>
 
 /** \class SkRefCntBase
 
@@ -185,12 +185,22 @@
 /**
  *  Utility class that simply unref's its argument in the destructor.
  */
-template <typename T> class SkAutoTUnref : public skstd::unique_ptr<T, SkTUnref<T>> {
+template <typename T> class SkAutoTUnref {
 public:
-    explicit SkAutoTUnref(T* obj = nullptr) : skstd::unique_ptr<T, SkTUnref<T>>(obj) {}
+    explicit SkAutoTUnref(T* obj = nullptr) : fPtr(obj) {}
 
-    T* detach() { return this->release(); }
-    operator T*() const { return this->get(); }
+    void swap(SkAutoTUnref& other) { fPtr.swap(other.fPtr); }
+
+    T*        get() const { return fPtr.get(); }
+    operator T*  () const { return fPtr.get(); }
+    T* operator->() const { return fPtr.get(); }
+
+    void reset(T* ptr = nullptr) { fPtr.reset(ptr); }
+    T* detach()  { return fPtr.release(); }
+    T* release() { return fPtr.release(); }
+
+private:
+    std::unique_ptr<T, SkTUnref<T>> fPtr;
 };
 // Can't use the #define trick below to guard a bare SkAutoTUnref(...) because it's templated. :(
 
diff --git a/include/private/SkOncePtr.h b/include/private/SkOncePtr.h
index 261f9a7..3c1ab63 100644
--- a/include/private/SkOncePtr.h
+++ b/include/private/SkOncePtr.h
@@ -9,7 +9,7 @@
 #define SkOncePtr_DEFINED
 
 #include "../private/SkAtomics.h"
-#include "SkUniquePtr.h"
+#include <memory>
 
 template <typename T> class SkBaseOncePtr;
 
@@ -17,7 +17,7 @@
 #define SK_DECLARE_STATIC_ONCE_PTR(type, name) namespace {} static SkBaseOncePtr<type> name;
 
 // Use this for a local or member pointer that's initialized exactly once when you call get().
-template <typename T, typename Delete = skstd::default_delete<T>>
+template <typename T, typename Delete = std::default_delete<T>>
 class SkOncePtr : SkNoncopyable {
 public:
     SkOncePtr() { sk_bzero(this, sizeof(*this)); }
@@ -42,7 +42,7 @@
 
 // If you ask for SkOncePtr<T[]>, we'll clean up with delete[] by default.
 template <typename T>
-class SkOncePtr<T[]> : public SkOncePtr<T, skstd::default_delete<T[]>> {};
+class SkOncePtr<T[]> : public SkOncePtr<T, std::default_delete<T[]>> {};
 
 /* TODO(mtklein): in next CL
 typedef SkBaseOncePtr<void> SkOnceFlag;
diff --git a/include/private/SkTemplates.h b/include/private/SkTemplates.h
index 496cf42..9776a99 100644
--- a/include/private/SkTemplates.h
+++ b/include/private/SkTemplates.h
@@ -13,8 +13,8 @@
 #include "SkMath.h"
 #include "SkTLogic.h"
 #include "SkTypes.h"
-#include "SkUniquePtr.h"
 #include <limits.h>
+#include <memory>
 #include <new>
 
 /** \file SkTemplates.h
@@ -57,13 +57,18 @@
     reference is null when the destructor is called, we do not call the
     function.
 */
-template <typename T, void (*P)(T*)> class SkAutoTCallVProc
-    : public skstd::unique_ptr<T, SkFunctionWrapper<void, T, P>> {
+template <typename T, void (*P)(T*)> class SkAutoTCallVProc {
 public:
-    SkAutoTCallVProc(T* obj): skstd::unique_ptr<T, SkFunctionWrapper<void, T, P>>(obj) {}
+    SkAutoTCallVProc(T* obj) : fPtr(obj) {}
 
-    operator T*() const { return this->get(); }
-    T* detach() { return this->release(); }
+    T*        get() const { return fPtr.get(); }
+    operator T*  () const { return fPtr.get(); }
+    T* operator->() const { return fPtr.get(); }
+
+    T* detach() { return fPtr.release(); }
+    void reset(T* ptr = nullptr) { fPtr.reset(ptr); }
+private:
+    std::unique_ptr<T, SkFunctionWrapper<void, T, P>> fPtr;
 };
 
 /** \class SkAutoTCallIProc
@@ -74,13 +79,18 @@
 reference is null when the destructor is called, we do not call the
 function.
 */
-template <typename T, int (*P)(T*)> class SkAutoTCallIProc
-    : public skstd::unique_ptr<T, SkFunctionWrapper<int, T, P>> {
+template <typename T, int (*P)(T*)> class SkAutoTCallIProc {
 public:
-    SkAutoTCallIProc(T* obj): skstd::unique_ptr<T, SkFunctionWrapper<int, T, P>>(obj) {}
+    SkAutoTCallIProc(T* obj) : fPtr(obj) {}
 
-    operator T*() const { return this->get(); }
-    T* detach() { return this->release(); }
+    T*        get() const { return fPtr.get(); }
+    operator T*  () const { return fPtr.get(); }
+    T* operator->() const { return fPtr.get(); }
+
+    T* detach() { return fPtr.release(); }
+    void reset(T* ptr = nullptr) { fPtr.reset(ptr); }
+private:
+    std::unique_ptr<T, SkFunctionWrapper<int, T, P>> fPtr;
 };
 
 /** \class SkAutoTDelete
@@ -93,18 +103,27 @@
 
   The size of a SkAutoTDelete is small: sizeof(SkAutoTDelete<T>) == sizeof(T*)
 */
-template <typename T> class SkAutoTDelete : public skstd::unique_ptr<T> {
+template <typename T> class SkAutoTDelete {
 public:
-    SkAutoTDelete(T* obj = NULL) : skstd::unique_ptr<T>(obj) {}
+    SkAutoTDelete(T* obj = NULL) : fPtr(obj) {}
 
-    operator T*() const { return this->get(); }
-    void free() { this->reset(nullptr); }
-    T* detach() { return this->release(); }
+    void swap(SkAutoTDelete& other) { fPtr.swap(other.fPtr); }
+
+    T*        get() const { return fPtr.get(); }
+    operator T*  () const { return fPtr.get(); }
+    T* operator->() const { return fPtr.get(); }
+
+    void reset(T* ptr = nullptr) { fPtr.reset(ptr); }
+    void free() { fPtr.reset(nullptr); }
+    T* detach() { return fPtr.release(); }
+    T* release() { return fPtr.release(); }
+private:
+    std::unique_ptr<T> fPtr;
 };
 
-template <typename T> class SkAutoTDeleteArray : public skstd::unique_ptr<T[]> {
+template <typename T> class SkAutoTDeleteArray : public std::unique_ptr<T[]> {
 public:
-    SkAutoTDeleteArray(T array[]) : skstd::unique_ptr<T[]>(array) {}
+    SkAutoTDeleteArray(T array[]) : std::unique_ptr<T[]>(array) {}
 
     void free() { this->reset(nullptr); }
     T* detach() { return this->release(); }
diff --git a/include/private/SkUniquePtr.h b/include/private/SkUniquePtr.h
deleted file mode 100644
index d87ce29..0000000
--- a/include/private/SkUniquePtr.h
+++ /dev/null
@@ -1,401 +0,0 @@
-/*
- * Copyright 2015 Google Inc.
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
-
-#ifndef SkUniquePtr_DEFINED
-#define SkUniquePtr_DEFINED
-
-#include "SkTLogic.h"
-#include <cstddef>
-#include <utility>
-
-namespace skstd {
-
-template <typename T> struct default_delete {
-    /*constexpr*/ default_delete() /*noexcept*/ = default;
-
-    template <typename U, typename = enable_if_t<is_convertible<U*, T*>::value>>
-    default_delete(const default_delete<U>&) /*noexcept*/ {}
-
-    void operator()(T* obj) const {
-        static_assert(sizeof(T) > 0, "Deleting pointer to incomplete type!");
-        delete obj;
-    }
-};
-template <typename T> struct default_delete<T[]> {
-    /*constexpr*/ default_delete() /*noexcept*/ = default;
-
-    void operator()(T* obj) const {
-        static_assert(sizeof(T) > 0, "Deleting pointer to incomplete type!");
-        delete [] obj;
-    }
-};
-
-template <typename T, typename D = default_delete<T>> class unique_ptr {
-    // remove_reference_t<D>::pointer if that type exists, otherwise T*.
-    struct pointer_type_detector {
-        template <typename U> static typename U::pointer detector(typename U::pointer*);
-        template <typename U> static T* detector(...);
-        using type = decltype(detector<remove_reference_t<D>>(0));
-    };
-
-public:
-    using pointer = typename pointer_type_detector::type;
-    using element_type = T;
-    using deleter_type = D;
-
-private:
-    template <typename B, bool = std::is_empty<B>::value /*&& !is_final<B>::value*/>
-    struct compressed_base : private B {
-        /*constexpr*/ compressed_base() : B() {}
-        /*constexpr*/ compressed_base(const B& b) : B(b) {}
-        /*constexpr*/ compressed_base(B&& b) : B(std::move(b)) {}
-        /*constexpr*/ B& get() /*noexcept*/ { return *this; }
-        /*constexpr*/ B const& get() const /*noexcept*/ { return *this; }
-        void swap(compressed_base&) /*noexcept*/ { }
-    };
-
-    template <typename B> struct compressed_base<B, false> {
-        B fb;
-        /*constexpr*/ compressed_base() : B() {}
-        /*constexpr*/ compressed_base(const B& b) : fb(b) {}
-        /*constexpr*/ compressed_base(B&& b) : fb(std::move(b)) {}
-        /*constexpr*/ B& get() /*noexcept*/ { return fb; }
-        /*constexpr*/ B const& get() const /*noexcept*/ { return fb; }
-        void swap(compressed_base& that) /*noexcept*/ { SkTSwap(fb, that.fB); }
-    };
-
-    struct compressed_data : private compressed_base<deleter_type> {
-        pointer fPtr;
-        /*constexpr*/ compressed_data() : compressed_base<deleter_type>(), fPtr() {}
-        /*constexpr*/ compressed_data(const pointer& ptr, const deleter_type& d)
-            : compressed_base<deleter_type>(d), fPtr(ptr) {}
-        template <typename U1, typename U2, typename = enable_if_t<
-            is_convertible<U1, pointer>::value && is_convertible<U2, deleter_type>::value
-        >> /*constexpr*/ compressed_data(U1&& ptr, U2&& d)
-            : compressed_base<deleter_type>(std::forward<U2>(d)), fPtr(std::forward<U1>(ptr)) {}
-        /*constexpr*/ pointer& getPointer() /*noexcept*/ { return fPtr; }
-        /*constexpr*/ pointer const& getPointer() const /*noexcept*/ { return fPtr; }
-        /*constexpr*/ deleter_type& getDeleter() /*noexcept*/ {
-            return compressed_base<deleter_type>::get();
-        }
-        /*constexpr*/ deleter_type const& getDeleter() const /*noexcept*/ {
-            return compressed_base<deleter_type>::get();
-        }
-        void swap(compressed_data& that) /*noexcept*/ {
-            compressed_base<deleter_type>::swap(static_cast<compressed_base<deleter_type>>(that));
-            SkTSwap(fPtr, that.fPtr);
-        }
-    };
-    compressed_data data;
-
-public:
-    /*constexpr*/ unique_ptr() /*noexcept*/ : data() {
-        static_assert(!std::is_pointer<deleter_type>::value, "Deleter nullptr function pointer!");
-    }
-
-    /*constexpr*/ unique_ptr(std::nullptr_t) /*noexcept*/ : unique_ptr() { }
-
-    explicit unique_ptr(pointer ptr) /*noexcept*/ : data(ptr, deleter_type()) {
-        static_assert(!std::is_pointer<deleter_type>::value, "Deleter nullptr function pointer!");
-    }
-
-    unique_ptr(pointer ptr,
-               conditional_t<std::is_reference<deleter_type>::value,
-                             deleter_type, const deleter_type&> d)
-    /*noexcept*/ : data(ptr, d)
-    {}
-
-    unique_ptr(pointer ptr, remove_reference_t<deleter_type>&& d) /*noexcept*/
-        : data(std::move(ptr), std::move(d))
-    {
-        static_assert(!std::is_reference<deleter_type>::value,
-            "Binding an rvalue reference deleter as an lvalue reference deleter is not allowed.");
-    }
-
-
-    unique_ptr(unique_ptr&& that) /*noexcept*/
-        : data(that.release(), std::forward<deleter_type>(that.get_deleter()))
-    {}
-
-    template <typename U, typename ThatD, typename = enable_if_t<
-        is_convertible<typename unique_ptr<U, ThatD>::pointer, pointer>::value &&
-        !std::is_array<U>::value &&
-        conditional_t<std::is_reference<D>::value,
-                      std::is_same<ThatD, D>,
-                      is_convertible<ThatD, D>>::value>>
-    unique_ptr(unique_ptr<U, ThatD>&& that) /*noexcept*/
-        : data(that.release(), std::forward<ThatD>(that.get_deleter()))
-    {}
-
-    ~unique_ptr() /*noexcept*/ {
-        pointer& ptr = data.getPointer();
-        if (ptr != nullptr) {
-            get_deleter()(ptr);
-        }
-        ptr = pointer();
-    }
-
-    unique_ptr& operator=(unique_ptr&& that) /*noexcept*/ {
-        reset(that.release());
-        get_deleter() = std::forward<deleter_type>(that.get_deleter());
-        return *this;
-    }
-
-    template <typename U, typename ThatD> enable_if_t<
-        is_convertible<typename unique_ptr<U, ThatD>::pointer, pointer>::value &&
-        !std::is_array<U>::value,
-    unique_ptr&> operator=(unique_ptr<U, ThatD>&& that) /*noexcept*/ {
-        reset(that.release());
-        get_deleter() = std::forward<ThatD>(that.get_deleter());
-        return *this;
-    }
-
-    unique_ptr& operator=(std::nullptr_t) /*noexcept*/ {
-        reset();
-        return *this;
-    }
-
-    add_lvalue_reference_t<element_type> operator*() const {
-        SkASSERT(get() != pointer());
-        return *get();
-    }
-
-    pointer operator->() const /*noexcept*/ {
-        SkASSERT(get() != pointer());
-        return get();
-    }
-
-    pointer get() const /*noexcept*/ {
-        return data.getPointer();
-    }
-
-    deleter_type& get_deleter() /*noexcept*/ {
-        return data.getDeleter();
-    }
-
-    const deleter_type& get_deleter() const /*noexcept*/ {
-        return data.getDeleter();
-    }
-
-    //explicit operator bool() const noexcept {
-    bool is_attached() const /*noexcept*/ {
-        return get() == pointer() ? false : true;
-    }
-
-    pointer release() /*noexcept*/ {
-        pointer ptr = get();
-        data.getPointer() = pointer();
-        return ptr;
-    }
-
-    void reset(pointer ptr = pointer()) /*noexcept*/ {
-        SkTSwap(data.getPointer(), ptr);
-        if (ptr != pointer()) {
-            get_deleter()(ptr);
-        }
-    }
-
-    void swap(unique_ptr& that) /*noexcept*/ {
-        SkTSwap(data, that.data);
-    }
-
-    unique_ptr(const unique_ptr&) = delete;
-    unique_ptr& operator=(const unique_ptr&) = delete;
-};
-
-template <typename T, typename D> class unique_ptr<T[], D> {
-    // remove_reference_t<D>::pointer if that type exists, otherwise T*.
-    struct pointer_type_detector {
-        template <typename U> static typename U::pointer detector(typename U::pointer*);
-        template <typename U> static T* detector(...);
-        using type = decltype(detector<remove_reference_t<D>>(0));
-    };
-
-public:
-    using pointer = typename pointer_type_detector::type;
-    using element_type = T;
-    using deleter_type = D;
-
-private:
-    template <typename B, bool = std::is_empty<B>::value /*&& !is_final<B>::value*/>
-    struct compressed_base : private B {
-        /*constexpr*/ compressed_base() : B() {}
-        /*constexpr*/ compressed_base(const B& b) : B(b) {}
-        /*constexpr*/ compressed_base(B&& b) : B(std::move(b)) {}
-        /*constexpr*/ B& get() /*noexcept*/ { return *this; }
-        /*constexpr*/ B const& get() const /*noexcept*/ { return *this; }
-        void swap(compressed_base&) /*noexcept*/ { }
-    };
-
-    template <typename B> struct compressed_base<B, false> {
-        B fb;
-        /*constexpr*/ compressed_base() : B() {}
-        /*constexpr*/ compressed_base(const B& b) : fb(b) {}
-        /*constexpr*/ compressed_base(B&& b) : fb(std::move(b)) {}
-        /*constexpr*/ B& get() /*noexcept*/ { return fb; }
-        /*constexpr*/ B const& get() const /*noexcept*/ { return fb; }
-        void swap(compressed_base& that) /*noexcept*/ { SkTSwap(fb, that.fB); }
-    };
-
-    struct compressed_data : private compressed_base<deleter_type> {
-        pointer fPtr;
-        /*constexpr*/ compressed_data() : compressed_base<deleter_type>(), fPtr() {}
-        /*constexpr*/ compressed_data(const pointer& ptr, const deleter_type& d)
-            : compressed_base<deleter_type>(d), fPtr(ptr) {}
-        template <typename U1, typename U2, typename = enable_if_t<
-            is_convertible<U1, pointer>::value && is_convertible<U2, deleter_type>::value
-        >> /*constexpr*/ compressed_data(U1&& ptr, U2&& d)
-            : compressed_base<deleter_type>(std::forward<U2>(d)), fPtr(std::forward<U1>(ptr)) {}
-        /*constexpr*/ pointer& getPointer() /*noexcept*/ { return fPtr; }
-        /*constexpr*/ pointer const& getPointer() const /*noexcept*/ { return fPtr; }
-        /*constexpr*/ deleter_type& getDeleter() /*noexcept*/ {
-            return compressed_base<deleter_type>::get();
-        }
-        /*constexpr*/ deleter_type const& getDeleter() const /*noexcept*/ {
-            return compressed_base<deleter_type>::get();
-        }
-        void swap(compressed_data& that) /*noexcept*/ {
-            compressed_base<deleter_type>::swap(static_cast<compressed_base<deleter_type>>(that));
-            SkTSwap(fPtr, that.fPtr);
-        }
-    };
-    compressed_data data;
-
-public:
-    /*constexpr*/ unique_ptr() /*noexcept*/ : data() {
-        static_assert(!std::is_pointer<deleter_type>::value, "Deleter nullptr function pointer!");
-    }
-
-    /*constexpr*/ unique_ptr(std::nullptr_t) /*noexcept*/ : unique_ptr() { }
-
-    explicit unique_ptr(pointer ptr) /*noexcept*/ : data(ptr, deleter_type()) {
-        static_assert(!std::is_pointer<deleter_type>::value, "Deleter nullptr function pointer!");
-    }
-
-    unique_ptr(pointer ptr,
-               conditional_t<std::is_reference<deleter_type>::value,
-                             deleter_type, const deleter_type&> d)
-    /*noexcept*/ : data(ptr, d)
-    {}
-
-    unique_ptr(pointer ptr, remove_reference_t<deleter_type>&& d) /*noexcept*/
-        : data(std::move(ptr), std::move(d))
-    {
-        static_assert(!std::is_reference<deleter_type>::value,
-            "Binding an rvalue reference deleter as an lvalue reference deleter is not allowed.");
-    }
-
-    unique_ptr(unique_ptr&& that) /*noexcept*/
-        : data(that.release(), std::forward<deleter_type>(that.get_deleter()))
-    {}
-
-    ~unique_ptr() {
-        pointer& ptr = data.getPointer();
-        if (ptr != nullptr) {
-          get_deleter()(ptr);
-        }
-        ptr = pointer();
-    }
-
-    unique_ptr& operator=(unique_ptr&& that) /*noexcept*/ {
-        reset(that.release());
-        get_deleter() = std::forward<deleter_type>(that.get_deleter());
-        return *this;
-    }
-
-    unique_ptr& operator=(std::nullptr_t) /*noexcept*/ {
-        reset();
-        return *this;
-    }
-
-    add_lvalue_reference_t<element_type> operator[](size_t i) const {
-        SkASSERT(get() != pointer());
-        return get()[i];
-    }
-
-    pointer get() const /*noexcept*/ {
-        return data.getPointer();
-    }
-
-    deleter_type& get_deleter() /*noexcept*/ {
-        return data.getDeleter();
-    }
-
-    const deleter_type& get_deleter() const /*noexcept*/ {
-        return data.getDeleter();
-    }
-
-    //explicit operator bool() const noexcept {
-    bool is_attached() const /*noexcept*/ {
-        return get() == pointer() ? false : true;
-    }
-
-    pointer release() /*noexcept*/ {
-        pointer ptr = get();
-        data.getPointer() = pointer();
-        return ptr;
-    }
-
-    void reset(pointer ptr = pointer()) /*noexcept*/ {
-        SkTSwap(data.getPointer(), ptr);
-        if (ptr != pointer()) {
-            get_deleter()(ptr);
-        }
-    }
-
-    template <typename U> void reset(U*) = delete;
-
-    void swap(unique_ptr& that) /*noexcept*/ {
-        data.swap(that.data);
-    }
-
-    unique_ptr(const unique_ptr&) = delete;
-    unique_ptr& operator=(const unique_ptr&) = delete;
-};
-
-template <typename T, typename D>
-inline void swap(unique_ptr<T, D>& a, unique_ptr<T, D>& b) /*noexcept*/ {
-    a.swap(b);
-}
-
-template <typename T, typename D, typename U, typename ThatD>
-inline bool operator==(const unique_ptr<T, D>& a, const unique_ptr<U, ThatD>& b) {
-    return a.get() == b.get();
-}
-
-template <typename T, typename D>
-inline bool operator==(const unique_ptr<T, D>& a, std::nullptr_t) /*noexcept*/ {
-    //return !a;
-    return !a.is_attached();
-}
-
-template <typename T, typename D>
-inline bool operator==(std::nullptr_t, const unique_ptr<T, D>& b) /*noexcept*/ {
-    //return !b;
-    return !b.is_attached();
-}
-
-template <typename T, typename D, typename U, typename ThatD>
-inline bool operator!=(const unique_ptr<T, D>& a, const unique_ptr<U, ThatD>& b) {
-    return a.get() != b.get();
-}
-
-template <typename T, typename D>
-inline bool operator!=(const unique_ptr<T, D>& a, std::nullptr_t) /*noexcept*/ {
-    //return (bool)a;
-    return a.is_attached();
-}
-
-template <typename T, typename D>
-inline bool operator!=(std::nullptr_t, const unique_ptr<T, D>& b) /*noexcept*/ {
-    //return (bool)b;
-    return b.is_attached();
-}
-
-}  // namespace skstd
-
-#endif
diff --git a/src/core/SkSharedMutex.h b/src/core/SkSharedMutex.h
index 840c2d3..21c9f46 100644
--- a/src/core/SkSharedMutex.h
+++ b/src/core/SkSharedMutex.h
@@ -14,7 +14,7 @@
 
 #ifdef SK_DEBUG
     #include "SkMutex.h"
-    #include "SkUniquePtr.h"
+    #include <memory>
 #endif  // SK_DEBUG
 
 // There are two shared lock implementations one debug the other is high performance. They implement
@@ -50,9 +50,9 @@
 private:
 #ifdef SK_DEBUG
     class ThreadIDSet;
-    skstd::unique_ptr<ThreadIDSet> fCurrentShared;
-    skstd::unique_ptr<ThreadIDSet> fWaitingExclusive;
-    skstd::unique_ptr<ThreadIDSet> fWaitingShared;
+    std::unique_ptr<ThreadIDSet> fCurrentShared;
+    std::unique_ptr<ThreadIDSet> fWaitingExclusive;
+    std::unique_ptr<ThreadIDSet> fWaitingShared;
     int fSharedQueueSelect{0};
     mutable SkMutex fMu;
     SkSemaphore fSharedQueue[2];
diff --git a/tests/CPlusPlusEleven.cpp b/tests/CPlusPlusEleven.cpp
deleted file mode 100644
index 0cd2e93..0000000
--- a/tests/CPlusPlusEleven.cpp
+++ /dev/null
@@ -1,99 +0,0 @@
-/*
- * Copyright 2015 Google Inc.
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
-#include "Test.h"
-#include "SkTemplates.h"
-#include <utility>
-
-namespace {
-class Moveable {
-public:
-    Moveable() {}
-    Moveable(Moveable&&) {}
-    Moveable& operator=(Moveable&&) { return *this; }
-private:
-    Moveable(const Moveable&);
-    Moveable& operator=(const Moveable&);
-};
-template <typename T> void deleter(T*) { }
-template <typename T> struct Deleter {
-    void operator()(T* t) { delete static_cast<const Moveable*>(t); }
-};
-} // namespace
-
-DEF_TEST(CPlusPlusEleven_RvalueAndMove, r) {
-    Moveable src1; Moveable dst1(std::move(src1));
-    Moveable src2, dst2; dst2 = std::move(src2);
-}
-
-#define TOO_BIG "The unique_ptr was bigger than expected."
-#define WEIRD_SIZE "The unique_ptr was a different size than expected."
-
-DEF_TEST(CPlusPlusEleven_UniquePtr, r) {
-    struct SmallUniquePtr {
-        Moveable* p;
-    };
-    struct BigUniquePtr {
-        void(*d)(Moveable*);
-        Moveable* p;
-    };
-
-    static_assert(sizeof(skstd::unique_ptr<Moveable>) == sizeof(SmallUniquePtr), TOO_BIG);
-    static_assert(sizeof(skstd::unique_ptr<Moveable[]>) == sizeof(SmallUniquePtr), TOO_BIG);
-
-    using proc = void(*)(Moveable*);
-    static_assert(sizeof(skstd::unique_ptr<Moveable, proc>) == sizeof(BigUniquePtr), WEIRD_SIZE);
-    static_assert(sizeof(skstd::unique_ptr<Moveable[], proc>) == sizeof(BigUniquePtr), WEIRD_SIZE);
-
-    {
-        skstd::unique_ptr<Moveable, void(*)(Moveable*)> u(nullptr, deleter<Moveable>);
-        static_assert(sizeof(u) == sizeof(BigUniquePtr), WEIRD_SIZE);
-
-        auto u2 = std::move(u);
-        static_assert(sizeof(u2) == sizeof(BigUniquePtr), WEIRD_SIZE);
-    }
-
-    {
-        skstd::unique_ptr<Moveable, void(*)(Moveable*)> u(nullptr, [](Moveable* m){ deleter(m); });
-        static_assert(sizeof(u) == sizeof(BigUniquePtr), WEIRD_SIZE);
-
-        auto u2 = std::move(u);
-        static_assert(sizeof(u2) == sizeof(BigUniquePtr), WEIRD_SIZE);
-    }
-
-    {
-        auto d = [](Moveable* m){ deleter(m); };
-        skstd::unique_ptr<Moveable, decltype(d)> u(nullptr, d);
-        static_assert(sizeof(u) == sizeof(SmallUniquePtr), TOO_BIG);
-
-        auto u2 = std::move(u);
-        static_assert(sizeof(u2) == sizeof(SmallUniquePtr), TOO_BIG);
-    }
-
-    {
-        skstd::unique_ptr<Moveable, Deleter<Moveable>> u(nullptr, Deleter<Moveable>());
-        static_assert(sizeof(u) == sizeof(SmallUniquePtr), TOO_BIG);
-
-        auto u2 = std::move(u);
-        static_assert(sizeof(u2) == sizeof(SmallUniquePtr), TOO_BIG);
-    }
-
-    {
-        skstd::unique_ptr<Moveable, Deleter<Moveable>> u(new Moveable(), Deleter<Moveable>());
-        static_assert(sizeof(u) == sizeof(SmallUniquePtr), TOO_BIG);
-
-        auto u2 = std::move(u);
-        static_assert(sizeof(u2) == sizeof(SmallUniquePtr), TOO_BIG);
-    }
-
-    {
-        skstd::unique_ptr<const void, Deleter<const void>> u(new Moveable(), Deleter<const void>());
-        static_assert(sizeof(u) == sizeof(SmallUniquePtr), TOO_BIG);
-
-        auto u2 = std::move(u);
-        static_assert(sizeof(u2) == sizeof(SmallUniquePtr), TOO_BIG);
-    }
-}