Cleanup: Remove some unneeded timer.h includes.

chrome/browser/task_manager/task_manager.h

 // 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.
 
 #ifndef CHROME_BROWSER_TASK_MANAGER_TASK_MANAGER_H_
 #define CHROME_BROWSER_TASK_MANAGER_TASK_MANAGER_H_
 
 #include <map>
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/callback_forward.h"
 #include "base/gtest_prod_util.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/singleton.h"
 #include "base/observer_list.h"
 #include "base/strings/string16.h"
-#include "base/timer/timer.h"
 #include "chrome/browser/task_manager/resource_provider.h"
 #include "chrome/browser/ui/host_desktop.h"
 #include "content/public/common/gpu_memory_stats.h"
 #include "third_party/WebKit/public/web/WebCache.h"
 
 class PrefRegistrySimple;
 class TaskManagerModel;
 class TaskManagerModelGpuDataManagerObserver;
 
 namespace base {
@@ skipping 512 matching lines @@
   // All per-Resource values are stored here.
   mutable PerResourceCache per_resource_cache_;
 
   // All per-Process values are stored here.
   mutable PerProcessCache per_process_cache_;
 
   DISALLOW_COPY_AND_ASSIGN(TaskManagerModel);
 };
 
 #endif  // CHROME_BROWSER_TASK_MANAGER_TASK_MANAGER_H_