Refactor DrawTarget and GPU to be independent

src/gpu/GrContext.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 "GrContext.h"
 
@@ skipping 195 matching lines @@
     fLayerCache->freeAll();
 }
 
 void GrContext::resetContext(uint32_t state) {
     fGpu->markContextDirty(state);
 }
 
 void GrContext::freeGpuResources() {
     this->flush();
 
-    fGpu->purgeResources();
     if (fDrawBuffer) {
         fDrawBuffer->purgeResources();
     }
 
     fAARectRenderer->reset();
     fOvalRenderer->reset();
 
     fResourceCache->purgeAllUnlocked();
     fFontCache->freeAll();
     fLayerCache->freeAll();
@@ skipping 1554 matching lines @@
     fResourceCache->printStats();
 }
 #endif
 
 #if GR_GPU_STATS
 const GrContext::GPUStats* GrContext::gpuStats() const {
     return fGpu->gpuStats();
 }
 #endif