cc: Refactor ResourceProvider.

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 "base/basictypes.h"
@@ skipping 44 matching lines @@
 #include "cc/resources/texture_mailbox_deleter.h"
 #include "cc/resources/ui_resource_bitmap.h"
 #include "cc/scheduler/delay_based_time_source.h"
 #include "cc/trees/damage_tracker.h"
 #include "cc/trees/layer_tree_host.h"
 #include "cc/trees/layer_tree_host_common.h"
 #include "cc/trees/layer_tree_impl.h"
 #include "cc/trees/occlusion_tracker.h"
 #include "cc/trees/single_thread_proxy.h"
 #include "cc/trees/tree_synchronizer.h"
+#include "gpu/command_buffer/client/gles2_interface.h"
 #include "gpu/GLES2/gl2extchromium.h"
 #include "ui/gfx/frame_time.h"
 #include "ui/gfx/size_conversions.h"
 #include "ui/gfx/vector2d_conversions.h"
 
+using gpu::gles2::GLES2Interface;
+
 namespace {
 
 void DidVisibilityChange(cc::LayerTreeHostImpl* id, bool visible) {
   if (visible) {
     TRACE_EVENT_ASYNC_BEGIN1("webkit",
                              "LayerTreeHostImpl::SetVisible",
                              id,
                              "LayerTreeHostImpl",
                              id);
     return;
@@ skipping 1265 matching lines @@
   // because they were exported.
   if (tile_manager_) {
     DCHECK(resource_pool_);
 
     resource_pool_->CheckBusyResources();
     resource_pool_->ReduceResourceUsage();
   }
   // If we're not visible, we likely released resources, so we want to
   // aggressively flush here to make sure those DeleteTextures make it to the
   // GPU process to free up the memory.
-  if (resource_provider_ && !visible_)
-    resource_provider_->ShallowFlushIfSupported();
+  if (output_surface_ && !visible_) {

[danakj, 2014/07/10 17:01:44]

you'll have to check that context_provider() is not null too, it will be when in
software mode

[sohanjg, 2014/07/11 16:43:32]

Done.

+    output_surface_->context_provider()->ContextGL()->ShallowFlushCHROMIUM();
+  }
 }
 
 void LayerTreeHostImpl::OnCanDrawStateChangedForTree() {
   client_->OnCanDrawStateChanged(CanDraw());
 }
 
 CompositorFrameMetadata LayerTreeHostImpl::MakeCompositorFrameMetadata() const {
   CompositorFrameMetadata metadata;
   metadata.device_scale_factor = device_scale_factor_;
   metadata.page_scale_factor = active_tree_->total_page_scale_factor();
@@ skipping 1785 matching lines @@
 }
 
 void LayerTreeHostImpl::UnregisterPictureLayerImpl(PictureLayerImpl* layer) {
   std::vector<PictureLayerImpl*>::iterator it =
       std::find(picture_layers_.begin(), picture_layers_.end(), layer);
   DCHECK(it != picture_layers_.end());
   picture_layers_.erase(it);
 }
 
 }  // namespace cc