Add process start time and CPU time columns to task manager

chrome/browser/task_manager/sampling/task_manager_impl.h

 // Copyright 2015 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.
 
 #ifndef CHROME_BROWSER_TASK_MANAGER_SAMPLING_TASK_MANAGER_IMPL_H_
 #define CHROME_BROWSER_TASK_MANAGER_SAMPLING_TASK_MANAGER_IMPL_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <map>
 #include <memory>
 #include <string>
 #include <vector>
 
 #include "base/lazy_instance.h"
 #include "base/macros.h"
 #include "base/memory/scoped_vector.h"
 #include "base/sequenced_task_runner.h"
+#include "base/time/time.h"
 #include "chrome/browser/task_manager/providers/task_provider.h"
 #include "chrome/browser/task_manager/providers/task_provider_observer.h"
 #include "chrome/browser/task_manager/sampling/task_group.h"
 #include "chrome/browser/task_manager/sampling/task_manager_io_thread_helper.h"
 #include "chrome/browser/task_manager/task_manager_interface.h"
 #include "content/public/browser/gpu_data_manager_observer.h"
 #include "gpu/ipc/common/memory_stats.h"
 
 namespace task_manager {
 
 class SharedSampler;
 
 // Defines a concrete implementation of the TaskManagerInterface.
 class TaskManagerImpl :
     public TaskManagerInterface,
     public TaskProviderObserver,
     content::GpuDataManagerObserver {
  public:
   ~TaskManagerImpl() override;
 
   static TaskManagerImpl* GetInstance();
 
   // task_manager::TaskManagerInterface:
   void ActivateTask(TaskId task_id) override;
   bool IsTaskKillable(TaskId task_id) override;
   void KillTask(TaskId task_id) override;
   double GetCpuUsage(TaskId task_id) const override;
+  base::Time GetStartTime(TaskId task_id) const override;
+  base::TimeDelta GetCpuTime(TaskId task_id) const override;
   int64_t GetPhysicalMemoryUsage(TaskId task_id) const override;
   int64_t GetPrivateMemoryUsage(TaskId task_id) const override;
   int64_t GetSharedMemoryUsage(TaskId task_id) const override;
   int64_t GetSwappedMemoryUsage(TaskId task_id) const override;
   int64_t GetGpuMemoryUsage(TaskId task_id,
                             bool* has_duplicates) const override;
   int GetIdleWakeupsPerSecond(TaskId task_id) const override;
   int GetNaClDebugStubPort(TaskId task_id) const override;
   void GetGDIHandles(TaskId task_id,
                      int64_t* current,
@@ skipping 107 matching lines @@
   // This will be set to true while there are observers and the task manager is
   // running.
   bool is_running_;
 
   DISALLOW_COPY_AND_ASSIGN(TaskManagerImpl);
 };
 
 }  // namespace task_manager
 
 #endif  // CHROME_BROWSER_TASK_MANAGER_SAMPLING_TASK_MANAGER_IMPL_H_