MessageLoop's RUN method will pass a const ref to PendingTask when

content/browser/browser_main_loop.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/browser/browser_main_loop.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/debug/trace_event.h"
 #include "base/hi_res_timer_manager.h"
 #include "base/logging.h"
 #include "base/message_loop.h"
 #include "base/metrics/field_trial.h"
 #include "base/metrics/histogram.h"
+#include "base/pending_task.h"
 #include "base/run_loop.h"
 #include "base/string_number_conversions.h"
 #include "base/threading/thread_restrictions.h"
 #include "content/browser/browser_thread_impl.h"
 #include "content/browser/download/save_file_manager.h"
 #include "content/browser/gamepad/gamepad_service.h"
 #include "content/browser/gpu/browser_gpu_channel_host_factory.h"
 #include "content/browser/gpu/gpu_data_manager_impl.h"
 #include "content/browser/gpu/gpu_process_host.h"
 #include "content/browser/gpu/gpu_process_host_ui_shim.h"
@@ skipping 204 matching lines @@
 void ImmediateShutdownAndExitProcess() {
   BrowserShutdownImpl::ImmediateShutdownAndExitProcess();
 }
 
 // For measuring memory usage after each task. Behind a command line flag.
 class BrowserMainLoop::MemoryObserver : public MessageLoop::TaskObserver {
  public:
   MemoryObserver() {}
   virtual ~MemoryObserver() {}
 
-  virtual void WillProcessTask(base::TimeTicks time_posted) OVERRIDE {}
+  virtual void WillProcessTask(const base::PendingTask& pending_task) OVERRIDE {
+  }
 
-  virtual void DidProcessTask(base::TimeTicks time_posted) OVERRIDE {
+  virtual void DidProcessTask(const base::PendingTask& pending_task) OVERRIDE {
 #if !defined(OS_IOS)
     HISTOGRAM_MEMORY_KB("Memory.BrowserUsed", webkit_glue::MemoryUsageKB());
 #endif
   }
  private:
   DISALLOW_COPY_AND_ASSIGN(MemoryObserver);
 };
 
 
 // static
@@ skipping 551 matching lines @@
   DCHECK_EQ(MessageLoop::TYPE_UI, MessageLoop::current()->type());
   if (parameters_.ui_task)
     MessageLoopForUI::current()->PostTask(FROM_HERE, *parameters_.ui_task);
 
   base::RunLoop run_loop;
   run_loop.Run();
 #endif
 }
 
 }  // namespace content