cc: Changes to use GL API for GpuMemoryBuffers

cc/trees/layer_tree_host.cc

 // Copyright 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "cc/trees/layer_tree_host.h"
 
 #include <algorithm>
 #include <stack>
 
 #include "base/bind.h"
@@ skipping 39 matching lines @@
     : best_texture_format(0),
       using_partial_swap(false),
       using_accelerated_painting(false),
       using_set_visibility(false),
       using_swap_complete_callback(false),
       using_gpu_memory_manager(false),
       using_egl_image(false),
       allow_partial_texture_updates(false),
       using_offscreen_context3d(false),
       max_texture_size(0),
-      avoid_pow2_textures(false) {}
+      avoid_pow2_textures(false),
+      use_gpu_memory_buffers(false) {}
 
 RendererCapabilities::~RendererCapabilities() {}
 
 bool LayerTreeHost::AnyLayerTreeHostInstanceExists() {
   return s_num_layer_tree_instances > 0;
 }
 
 scoped_ptr<LayerTreeHost> LayerTreeHost::Create(
     LayerTreeHostClient* client,
     const LayerTreeSettings& settings,
@@ skipping 113 matching lines @@
     }
     settings_.max_partial_texture_updates = max_partial_texture_updates;
 
     if (!contents_texture_manager_) {
       contents_texture_manager_ =
           PrioritizedResourceManager::Create(proxy_.get());
       surface_memory_placeholder_ =
           contents_texture_manager_->CreateTexture(gfx::Size(), GL_RGBA);
     }
 
+    settings_.use_gpu_memory_buffers =
+        settings_.use_gpu_memory_buffers &&
+        proxy_->GetRendererCapabilities().use_gpu_memory_buffers;
+
     client_->DidInitializeOutputSurface(true);
     return CreateSucceeded;
   }
 
   // Failure path.
 
   client_->DidFailToInitializeOutputSurface();
 
   // Tolerate a certain number of recreation failures to work around races
   // in the output-surface-lost machinery.
@@ skipping 891 matching lines @@
     bool start_ready_animations = true;
     (*iter).second->UpdateState(start_ready_animations, NULL);
   }
 }
 
 skia::RefPtr<SkPicture> LayerTreeHost::CapturePicture() {
   return proxy_->CapturePicture();
 }
 
 }  // namespace cc