Shared Raster Worker Threads

cc/layers/picture_layer.cc

 // Copyright 2012 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/layers/picture_layer.h"
 
+#include "cc/base/switches.h"
 #include "cc/layers/content_layer_client.h"
 #include "cc/layers/picture_layer_impl.h"
 #include "cc/trees/layer_tree_impl.h"
 #include "ui/gfx/rect_conversions.h"
 
 namespace cc {
 
 scoped_refptr<PictureLayer> PictureLayer::Create(ContentLayerClient* client) {
   return make_scoped_refptr(new PictureLayer(client));
 }
@@ skipping 39 matching lines @@
   layer_impl->invalidation_.Clear();
   layer_impl->invalidation_.Swap(&pile_invalidation_);
   layer_impl->pile_ = PicturePileImpl::CreateFromOther(pile_.get());
 }
 
 void PictureLayer::SetLayerTreeHost(LayerTreeHost* host) {
   Layer::SetLayerTreeHost(host);
   if (host) {
     pile_->SetMinContentsScale(host->settings().minimum_contents_scale);
     pile_->SetTileGridSize(host->settings().default_tile_size);
-    pile_->set_num_raster_threads(host->settings().num_raster_threads);
+    pile_->set_num_raster_threads(switches::GetNumRasterThreads());
     pile_->set_slow_down_raster_scale_factor(
         host->debug_state().slow_down_raster_scale_factor);
     pile_->set_show_debug_picture_borders(
         host->debug_state().show_picture_borders);
   }
 }
 
 void PictureLayer::SetNeedsDisplayRect(const gfx::RectF& layer_rect) {
   gfx::Rect rect = gfx::ToEnclosedRect(layer_rect);
   if (!rect.IsEmpty()) {
@@ skipping 78 matching lines @@
   client_->PaintContents(canvas, gfx::Rect(width, height), &opaque);
   picture->endRecording();
   return picture;
 }
 
 void PictureLayer::RunMicroBenchmark(MicroBenchmark* benchmark) {
   benchmark->RunOnLayer(this);
 }
 
 }  // namespace cc