Remove SkAutoTUnref and SkAutoTDelete from public includes.

include/gpu/gl/GrGLExtensions.h

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrGLExtensions_DEFINED
 #define GrGLExtensions_DEFINED
 
@@ skipping 50 matching lines @@
      * Adds an extension to list
      */
     void add(const char[]);
 
     void reset() { fStrings->reset(); }
 
     void print(const char* sep = "\n") const;
 
 private:
     bool                                fInitialized;
-    SkAutoTDelete<SkTArray<SkString> >  fStrings;
+    std::unique_ptr<SkTArray<SkString>> fStrings;
 };
 
 #endif