content: Cleanup class/struct forward declarations

content/public/browser/profiler_controller.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 CONTENT_PUBLIC_BROWSER_PROFILER_CONTROLLER_H_
 #define CONTENT_PUBLIC_BROWSER_PROFILER_CONTROLLER_H_
 
 #include <set>
 #include <string>
 
 #include "base/tracked_objects.h"
 #include "content/common/content_export.h"
 
-
-namespace base {
-class DictionaryValue;
-}
-
 namespace content {
 
 class ProfilerSubscriber;
 
 // ProfilerController is used on the browser process to collect profiler data.
 // Only the browser UI thread is allowed to interact with the ProfilerController
 // object.
 class CONTENT_EXPORT ProfilerController {
  public:
   // Returns the ProfilerController object for the current process, or nullptr
@@ skipping 19 matching lines @@
                                int current_profiling_phase) = 0;
 
   // Contact child processes and notify them that the |profiling_phase| has
   // completed.
   virtual void OnProfilingPhaseCompleted(int profiling_phase) = 0;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_PROFILER_CONTROLLER_H_