Implement a benchmark for GrResourceCache

gm/gm.cpp

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "gm.h"
 using namespace skiagm;
 
@@ skipping 45 matching lines @@
 
 void GM::drawSizeBounds(SkCanvas* canvas, SkColor color) {
     SkISize size = this->getISize();
     SkRect r = SkRect::MakeWH(SkIntToScalar(size.width()),
                               SkIntToScalar(size.height()));
     SkPaint paint;
     paint.setColor(color);
     canvas->drawRect(r, paint);
 }
 
-#if SK_SUPPORT_GPU
-// canvas could almost be a const&, but accessRenderTarget isn't const.
-/*static*/ GrContext* GM::GetGr(SkCanvas* canvas) {
-    SkASSERT(NULL != canvas);
-    SkBaseDevice* device = canvas->getTopDevice();
-    GrRenderTarget* renderTarget = device->accessRenderTarget();
-    if (NULL != renderTarget) {
-        return renderTarget->getContext();
-    }
-    return NULL;
-}
-#endif
-
 // need to explicitly declare this, or we get some weird infinite loop llist
 template GMRegistry* SkTRegistry<GM*(*)(void*)>::gHead;