content: Add an overridable task runner to ChildThreadImpl

content/renderer/renderer_main.cc

Index: content/renderer/renderer_main.cc
diff --git a/content/renderer/renderer_main.cc b/content/renderer/renderer_main.cc
index a76df805790ff7d12a0b4b62fb67518edaaa36da..36258e8ac2ed1a1c54ed5bde7d06b574a731b81a 100644
--- a/content/renderer/renderer_main.cc
+++ b/content/renderer/renderer_main.cc
@@ -28,6 +28,7 @@
 #include "content/renderer/render_process_impl.h"
 #include "content/renderer/render_thread_impl.h"
 #include "content/renderer/renderer_main_platform_delegate.h"
+#include "content/renderer/scheduler/renderer_scheduler.h"
 #include "ui/base/ui_base_switches.h"
 
 #if defined(OS_ANDROID)
@@ -147,6 +148,8 @@ int RendererMain(const MainFunctionParams& parameters) {
   main_message_loop->AddTaskObserver(&task_observer);
 
   base::PlatformThread::SetName("CrRendererMain");
+  scoped_ptr<RendererScheduler> renderer_scheduler =
+      RendererScheduler::Create();
 
   bool no_sandbox = parsed_command_line.HasSwitch(switches::kNoSandbox);
 
@@ -191,7 +194,7 @@ int RendererMain(const MainFunctionParams& parameters) {
     // TODO(markus): Check if it is OK to unconditionally move this
     // instruction down.
     RenderProcessImpl render_process;
-    new RenderThreadImpl(main_message_loop.Pass());
+    new RenderThreadImpl(main_message_loop.Pass(), renderer_scheduler.Pass());
 #endif
     bool run_loop = true;
     if (!no_sandbox) {
@@ -207,7 +210,7 @@ int RendererMain(const MainFunctionParams& parameters) {
     }
 #if defined(OS_POSIX) && !defined(OS_MACOSX)
     RenderProcessImpl render_process;
-    new RenderThreadImpl(main_message_loop.Pass());
+    new RenderThreadImpl(main_message_loop.Pass(), renderer_scheduler.Pass());
 #endif
     base::HighResolutionTimerManager hi_res_timer_manager;