sk_sp for gpu.

include/private/SkTArray.h

Index: include/private/SkTArray.h
diff --git a/include/private/SkTArray.h b/include/private/SkTArray.h
index 55d4f86aaabf63d9baf9f8a6a9d610175b6a23b8..1fe2c3857c1555c58efe20303709dbde649ee868 100644
--- a/include/private/SkTArray.h
+++ b/include/private/SkTArray.h
@@ -121,6 +121,15 @@ public:
     }
 
     /**
+     * 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) {