cc: Changes to use GL API for GpuMemoryBuffers

cc/trees/layer_tree_host_impl.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_impl.h"
 
 #include <algorithm>
 
 #include "base/basictypes.h"
 #include "base/json/json_writer.h"
@@ skipping 1373 matching lines @@
     return false;
 
   if (settings_.impl_side_painting) {
     tile_manager_.reset(new TileManager(this,
                                         resource_provider.get(),
                                         settings_.num_raster_threads,
                                         settings_.use_color_estimator,
                                         settings_.prediction_benchmarking,
                                         rendering_stats_instrumentation_));
     UpdateTileManagerMemoryPolicy(managed_memory_policy_);
+    if (settings_.use_gpu_memory_buffers)

[reveman, 2013/05/20 23:16:01]

Do we need to filter this setting in
LayerTreeHost::OnCreateAndInitializeOutputSurfaceAttempted and make sure it's
actually supported?

[kaanb, 2013/05/21 00:52:29]

Done.

+      tile_manager_->SetUseGpuMemoryBuffers(true);
   }
 
   if (output_surface->capabilities().has_parent_compositor) {
     renderer_ = DelegatingRenderer::Create(this, output_surface.get(),
                                            resource_provider.get());
   } else if (output_surface->context3d()) {
     renderer_ = GLRenderer::Create(this,
                                    output_surface.get(),
                                    resource_provider.get(),
                                    settings_.highp_threshold_min);
@@ skipping 759 matching lines @@
 }
 
 void LayerTreeHostImpl::SetDebugState(const LayerTreeDebugState& debug_state) {
   if (debug_state_.continuous_painting != debug_state.continuous_painting)
     paint_time_counter_->ClearHistory();
 
   debug_state_ = debug_state;
 }
 
 }  // namespace cc