Add support for base::Closure in the MessageLoop.

chrome/renderer/renderer_main.cc

 // Copyright (c) 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.
 
 #if defined(OS_MACOSX)
 #include <signal.h>
 #include <unistd.h>
 #endif  // OS_MACOSX
 
 #include "base/command_line.h"
@@ skipping 160 matching lines @@
     *bad_pointer = 0;
   }
 
   if (command_line.HasSwitch(switches::kRendererStartupDialog)) {
     ChildProcess::WaitForDebugger("Renderer");
   }
 }
 
 // This is a simplified version of the browser Jankometer, which measures
 // the processing time of tasks on the render thread.
-class RendererMessageLoopObserver : public MessageLoop::TaskObserver {
+class RendererMessageLoopObserver : public MessageLoop::ClosureObserver {
  public:
   RendererMessageLoopObserver()
       : process_times_(base::Histogram::FactoryGet(
             "Chrome.ProcMsgL RenderThread",
             1, 3600000, 50, base::Histogram::kUmaTargetedHistogramFlag)) {}
   virtual ~RendererMessageLoopObserver() {}
 
-  virtual void WillProcessTask(const Task* task) {
+  virtual void WillProcessClosure(base::TimeTicks time_posted) {
     begin_process_message_ = base::TimeTicks::Now();
   }
 
-  virtual void DidProcessTask(const Task* task) {
+  virtual void DidProcessClosure(base::TimeTicks time_posted) {
     if (begin_process_message_ != base::TimeTicks())
       process_times_->AddTime(base::TimeTicks::Now() - begin_process_message_);
   }
 
  private:
   base::TimeTicks begin_process_message_;
   base::Histogram* const process_times_;
   DISALLOW_COPY_AND_ASSIGN(RendererMessageLoopObserver);
 };
 
@@ skipping 48 matching lines @@
   // flag allowing us to attach a debugger.
   // Do not move this function down since that would mean we can't easily debug
   // whatever occurs before it.
   HandleRendererErrorTestParameters(parsed_command_line);
 
   RendererMainPlatformDelegate platform(parameters);
 
   base::StatsScope<base::StatsCounterTimer>
       startup_timer(chrome::Counters::renderer_main());
 
-  RendererMessageLoopObserver task_observer;
+  RendererMessageLoopObserver closure_observer;
 #if defined(OS_MACOSX)
   // As long as we use Cocoa in the renderer (for the forseeable future as of
   // now; see http://crbug.com/13890 for info) we need to have a UI loop.
   MessageLoop main_message_loop(MessageLoop::TYPE_UI);
 #else
   // The main message loop of the renderer services doesn't have IO or UI tasks,
   // unless in-process-plugins is used.
   MessageLoop main_message_loop(RenderProcessImpl::InProcessPlugins() ?
               MessageLoop::TYPE_UI : MessageLoop::TYPE_DEFAULT);
 #endif
-  main_message_loop.AddTaskObserver(&task_observer);
+  main_message_loop.AddClosureObserver(&closure_observer);
 
   base::PlatformThread::SetName("CrRendererMain");
 
   ui::SystemMonitor system_monitor;
   HighResolutionTimerManager hi_res_timer_manager;
 
   platform.PlatformInitialize();
 
   bool no_sandbox = parsed_command_line.HasSwitch(switches::kNoSandbox);
   platform.InitSandboxTests(no_sandbox);
@@ skipping 45 matching lines @@
         pool->Recycle();
       TRACE_EVENT_BEGIN("RendererMain.START_MSG_LOOP", 0, 0);
       MessageLoop::current()->Run();
       TRACE_EVENT_END("RendererMain.START_MSG_LOOP", 0, 0);
     }
   }
   platform.PlatformUninitialize();
   TRACE_EVENT_END("RendererMain", 0, "");
   return 0;
 }