Delete obviously unneeded forward declarations in chrome/browser/*.h.

chrome/browser/task_manager.h

-// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
+// Copyright (c) 2010 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_H_
 #define CHROME_BROWSER_TASK_MANAGER_H_
 #pragma once
 
 #include <map>
 #include <string>
 #include <utility>
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/gtest_prod_util.h"
 #include "base/lock.h"
 #include "base/observer_list.h"
 #include "base/process_util.h"
 #include "base/ref_counted.h"
 #include "base/singleton.h"
 #include "base/timer.h"
 #include "chrome/browser/renderer_host/web_cache_manager.h"
 #include "net/url_request/url_request_job_tracker.h"
 #include "third_party/WebKit/WebKit/chromium/public/WebCache.h"
 
 class Extension;
 class SkBitmap;
 class TabContents;
-class TaskManager;
 class TaskManagerModel;
 
-struct BytesReadParam;
-
 namespace base {
 class ProcessMetrics;
 }
 
 // This class is a singleton.
 class TaskManager {
  public:
   // A resource represents one row in the task manager.
   // Resources from similar processes are grouped together by the task manager.
   class Resource {
@@ skipping 362 matching lines @@
   // Whether we are currently in the process of updating.
   UpdateState update_state_;
 
   // A salt lick for the goats.
   int goat_salt_;
 
   DISALLOW_COPY_AND_ASSIGN(TaskManagerModel);
 };
 
 #endif  // CHROME_BROWSER_TASK_MANAGER_H_