Revert of Use transfer buffer for BatchAtlas texture copies

src/gpu/gl/GrGLGpu.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 GrGLGpu_DEFINED
 #define GrGLGpu_DEFINED
 
@@ skipping 166 matching lines @@
                       int width, int height,
                       GrPixelConfig,
                       void* buffer,
                       size_t rowBytes) override;
 
     bool onWritePixels(GrSurface*,
                        int left, int top, int width, int height,
                        GrPixelConfig config,
                        const SkTArray<GrMipLevel>& texels) override;
 
-    bool onTransferPixels(GrTexture*,
+    bool onTransferPixels(GrSurface*,
                           int left, int top, int width, int height,
                           GrPixelConfig config, GrBuffer* transferBuffer,
                           size_t offset, size_t rowBytes) override;
 
     void onResolveRenderTarget(GrRenderTarget* target) override;
 
     void onDraw(const GrPipeline&,
                 const GrPrimitiveProcessor&,
                 const GrMesh*,
                 int meshCount) override;
@@ skipping 366 matching lines @@
     bool fHWPLSEnabled;
     bool fPLSHasBeenUsed;
 
     float fHWMinSampleShading;
 
     typedef GrGpu INHERITED;
     friend class GrGLPathRendering; // For accessing setTextureUnit.
 };
 
 #endif