cc: Add TaskGraphRunner sub-namespaces with task concurrency limits.

content/renderer/render_thread_impl.cc

 // Copyright (c) 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 "content/renderer/render_thread_impl.h"
 
 #include <algorithm>
 #include <limits>
 #include <map>
 #include <vector>
@@ skipping 649 matching lines @@
     std::string string_value =
         command_line.GetSwitchValueASCII(switches::kNumRasterThreads);
     bool parsed_num_raster_threads =
         base::StringToInt(string_value, &num_raster_threads);
     DCHECK(parsed_num_raster_threads) << string_value;
     DCHECK_GT(num_raster_threads, 0);
 
     // Force maximum 1 thread for threaded GPU rasterization.
     // TODO(vmiura): crbug.com/459760 Support existence of multiple raster
     // threads in GPU raster mode.
-    if (is_threaded_gpu_rasterization_enabled_)
-      num_raster_threads = 1;
+    // if (is_threaded_gpu_rasterization_enabled_)

[danakj, 2015/02/23 18:45:01]

debugging leftover?

+    //  num_raster_threads = 1;
     cc::TileTaskWorkerPool::SetNumWorkerThreads(num_raster_threads);
 
 #if defined(OS_ANDROID) || defined(OS_LINUX)
     if (!command_line.HasSwitch(
             switches::kUseNormalPriorityForTileTaskWorkerThreads)) {
       cc::TileTaskWorkerPool::SetWorkerThreadPriority(
           base::kThreadPriority_Background);
     }
 #endif
   }
@@ skipping 1145 matching lines @@
     mojo::InterfaceRequest<mojo::ServiceProvider> services,
     mojo::ServiceProviderPtr exposed_services)
     : services(services.Pass()),
       exposed_services(exposed_services.Pass()) {
 }
 
 RenderThreadImpl::PendingRenderFrameConnect::~PendingRenderFrameConnect() {
 }
 
 }  // namespace content