Make GrGpu read/write pixels take GrSurface

src/gpu/GrBatchTarget.h

Index: src/gpu/GrBatchTarget.h
diff --git a/src/gpu/GrBatchTarget.h b/src/gpu/GrBatchTarget.h
index 19cfb09cb7278633457991910c1c3a8633ba0282..8a78904b10e86797d3a4bfeed7a4d71920f05d27 100644
--- a/src/gpu/GrBatchTarget.h
+++ b/src/gpu/GrBatchTarget.h
@@ -51,8 +51,7 @@ public:
                                 int left, int top, int width, int height,
                                 GrPixelConfig config, const void* buffer,
                                 size_t rowBytes) {
-            return fGpu->writeTexturePixels(texture, left, top, width, height, config, buffer,
-                                            rowBytes);
+            return fGpu->writePixels(texture, left, top, width, height, config, buffer, rowBytes);
         }
 
     private: