cc: Add flag to specify to ResourceProvider to always use GMBs

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 <limits>
 #include <map>
 #include <set>
@@ skipping 2248 matching lines @@
     // point).
     return false;
   }
 
   output_surface_ = output_surface;
   resource_provider_ = ResourceProvider::Create(
       output_surface_, shared_bitmap_manager_, gpu_memory_buffer_manager_,
       task_runner_provider_->blocking_main_thread_task_runner(),
       settings_.renderer_settings.highp_threshold_min,
       settings_.renderer_settings.texture_id_allocation_chunk_size,
+      settings_.renderer_settings.use_gpu_memory_buffer_resources,
       settings_.use_image_texture_targets);
 
   CreateAndSetRenderer();
 
   // Since the new renderer may be capable of MSAA, update status here.
   UpdateGpuRasterizationStatus();
 
   CreateTileManagerResources();
   RecreateTreeResources();
 
@@ skipping 1408 matching lines @@
   return task_runner_provider_->HasImplThread();
 }
 
 bool LayerTreeHostImpl::CommitToActiveTree() const {
   // In single threaded mode we skip the pending tree and commit directly to the
   // active tree.
   return !task_runner_provider_->HasImplThread();
 }
 
 }  // namespace cc