sk_sp for gpu.

include/private/SkTArray.h

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkTArray_DEFINED
 #define SkTArray_DEFINED
 
@@ skipping 103 matching lines @@
         // Set fCount to 0 before calling checkRealloc so that no elements are moved.
         fCount = 0;
         this->checkRealloc(n);
         fCount = n;
         for (int i = 0; i < fCount; ++i) {
             new (fItemArray + i) T;
         }
     }
 
     /**
+     * Ensures there is enough reserved space for n elements.
+     */
+    void reserve(int n) {
+        if (fCount < n) {
+            this->checkRealloc(n - fCount);
+        }
+    }
+
+    /**
      * Resets to a copy of a C array.
      */
     void reset(const T* array, int count) {
         for (int i = 0; i < fCount; ++i) {
             fItemArray[i].~T();
         }
         fCount = 0;
         this->checkRealloc(count);
         fCount = count;
         this->copy(array);
@@ skipping 395 matching lines @@
     SkSTArray& operator= (const INHERITED& array) {
         INHERITED::operator=(array);
         return *this;
     }
 
 private:
     SkAlignedSTStorage<N,T> fStorage;
 };
 
 #endif