Now we have a proper C++ library, use std::unique_ptr.

Also remove the Android.libcxx.mk and other bits of stlport compatibility
mechanics.

Change-Id: Icdf7188ba3c79cdf5617672c1cfd0a68ae596a61
diff --git a/runtime/mirror/art_method.h b/runtime/mirror/art_method.h
index 3950a98..37f26a2 100644
--- a/runtime/mirror/art_method.h
+++ b/runtime/mirror/art_method.h
@@ -407,13 +407,13 @@
   HeapReference<Class> declaring_class_;
 
   // Short cuts to declaring_class_->dex_cache_ member for fast compiled code access.
-  HeapReference<ObjectArray<ArtMethod> > dex_cache_resolved_methods_;
+  HeapReference<ObjectArray<ArtMethod>> dex_cache_resolved_methods_;
 
   // Short cuts to declaring_class_->dex_cache_ member for fast compiled code access.
-  HeapReference<ObjectArray<Class> > dex_cache_resolved_types_;
+  HeapReference<ObjectArray<Class>> dex_cache_resolved_types_;
 
   // Short cuts to declaring_class_->dex_cache_ member for fast compiled code access.
-  HeapReference<ObjectArray<String> > dex_cache_strings_;
+  HeapReference<ObjectArray<String>> dex_cache_strings_;
 
   // Method dispatch from the interpreter invokes this pointer which may cause a bridge into
   // compiled code.