Add support for base::Closure in the MessageLoop.

chrome/renderer/renderer_main.cc

Index: chrome/renderer/renderer_main.cc
diff --git a/chrome/renderer/renderer_main.cc b/chrome/renderer/renderer_main.cc
index 2066dc8e04c1ca0710f83a0f25464db91dc0e85d..4094da25868e370346943e224bc81791d57663f1 100644
--- a/chrome/renderer/renderer_main.cc
+++ b/chrome/renderer/renderer_main.cc
@@ -218,11 +218,11 @@ class RendererMessageLoopObserver : public MessageLoop::TaskObserver {
             1, 3600000, 50, base::Histogram::kUmaTargetedHistogramFlag)) {}
   virtual ~RendererMessageLoopObserver() {}
 
-  virtual void WillProcessTask(const Task* task) {
+  virtual void WillProcessTask(base::TimeTicks time_posted) {
     begin_process_message_ = base::TimeTicks::Now();
   }
 
-  virtual void DidProcessTask(const Task* task) {
+  virtual void DidProcessTask(base::TimeTicks time_posted) {
     if (begin_process_message_ != base::TimeTicks())
       process_times_->AddTime(base::TimeTicks::Now() - begin_process_message_);
   }