Move some parts of onReadPixels up to GrGpu readPixels.

src/gpu/GrTest.cpp

 
 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "GrTest.h"
 
@@ skipping 190 matching lines @@
                          bool canIgnoreRect) override {}
 
     void onClearStencilClip(GrRenderTarget*, const SkIRect& rect, bool insideClip) override {}
 
     void onDraw(const DrawArgs&, const GrNonInstancedVertices&) override {}
 
     bool onReadPixels(GrSurface* surface,
                       int left, int top, int width, int height,
                       GrPixelConfig,
                       void* buffer,
-                      size_t rowBytes) override {
+                      size_t rowBytes,
+                      size_t tightRowBytes) override {
         return false;
     }
 
     bool onWritePixels(GrSurface* surface,
                        int left, int top, int width, int height,
                        GrPixelConfig config, const void* buffer,
                        size_t rowBytes) override {
         return false;
     }
 
@@ skipping 36 matching lines @@
     SkASSERT(NULL == fGpu);
     fGpu = SkNEW_ARGS(MockGpu, (this, options));
     SkASSERT(fGpu);
     this->initCommon();
 
     // We delete these because we want to test the cache starting with zero resources. Also, none of
     // these objects are required for any of tests that use this context. TODO: make stop allocating
     // resources in the buffer pools.
     fDrawingMgr.abandon();
 }