Add category handling to RasterWorkerPool

content/browser/renderer_host/render_process_host_impl.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.
 
 // Represents the browser side of the browser <--> renderer communication
 // channel. There will be one RenderProcessHost per renderer process.
 
 #include "content/browser/renderer_host/render_process_host_impl.h"
 
 #include <algorithm>
@@ skipping 1216 matching lines @@
 }
 
 static void AppendCompositorCommandLineFlags(base::CommandLine* command_line) {
   if (IsPropertyTreeVerificationEnabled())
     command_line->AppendSwitch(cc::switches::kEnablePropertyTreeVerification);
 
   command_line->AppendSwitchASCII(
       switches::kNumRasterThreads,
       base::IntToString(NumberOfRendererRasterThreads()));
 
+  if (UseSingleThreadForBackgroundRasterTasks())
+    command_line->AppendSwitch(
+        switches::kUseSingleThreadForBackgroundRasterTasks);
+
   if (IsGpuRasterizationEnabled())
     command_line->AppendSwitch(switches::kEnableGpuRasterization);
 
   int msaa_sample_count = GpuRasterizationMSAASampleCount();
   if (msaa_sample_count >= 0) {
     command_line->AppendSwitchASCII(switches::kGpuRasterizationMSAASampleCount,
                                     base::IntToString(msaa_sample_count));
   }
 
   if (IsZeroCopyUploadEnabled())
@@ skipping 1500 matching lines @@
 void RenderProcessHostImpl::GetAudioOutputControllers(
     const GetAudioOutputControllersCallback& callback) const {
   audio_renderer_host()->GetOutputControllers(callback);
 }
 
 BluetoothDispatcherHost* RenderProcessHostImpl::GetBluetoothDispatcherHost() {
   return bluetooth_dispatcher_host_.get();
 }
 
 }  // namespace content