Enable ClangTidy check modernize-make-unique.

The majority of existing call sites were automatically updated using
clang-tidy -fix. A small handful required a manual update,
e.g. CppCodeGen.

This check is a bit lenient, and in particular will not flag cases like
`std::unique_ptr<Base>(new Derived())` which is still pretty common
throughout our codebase. This CL does not attempt to replace all the
cases that ClangTidy does not flag.

Change-Id: I5eba48ef880e25d22de80f321a68c389ba769e36
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/307459
Commit-Queue: John Stiles <johnstiles@google.com>
Reviewed-by: Mike Klein <mtklein@google.com>
diff --git a/src/gpu/GrContextThreadSafeProxy.cpp b/src/gpu/GrContextThreadSafeProxy.cpp
index b4fbed6..1642c92 100644
--- a/src/gpu/GrContextThreadSafeProxy.cpp
+++ b/src/gpu/GrContextThreadSafeProxy.cpp
@@ -5,6 +5,8 @@
  * found in the LICENSE file.
  */
 
+#include <memory>
+
 #include "include/gpu/GrContextThreadSafeProxy.h"
 #include "src/gpu/GrContextThreadSafeProxyPriv.h"
 
@@ -36,7 +38,7 @@
 
 void GrContextThreadSafeProxy::init(sk_sp<const GrCaps> caps) {
     fCaps = std::move(caps);
-    fTextBlobCache.reset(new GrTextBlobCache(fContextID));
+    fTextBlobCache = std::make_unique<GrTextBlobCache>(fContextID);
 }
 
 SkSurfaceCharacterization GrContextThreadSafeProxy::createCharacterization(