Remove unnecessary uses of aura::Env::GetDispatcher

base/run_loop.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 BASE_RUN_LOOP_H_
 #define BASE_RUN_LOOP_H_
 
 #include "base/base_export.h"
 #include "base/callback.h"
 #include "base/memory/weak_ptr.h"
@@ skipping 18 matching lines @@
 // per RunLoop lifetime. Create a RunLoop on the stack and call Run/Quit to run
 // a nested MessageLoop.
 class BASE_EXPORT RunLoop {
  public:
   RunLoop();
 #if defined(USE_AURA)
   explicit RunLoop(MessagePumpDispatcher* dispatcher);
 #endif
   ~RunLoop();
 
-#if defined(USE_AURA)
-  void set_dispatcher(MessagePumpDispatcher* dispatcher) {
-    dispatcher_ = dispatcher;
-  }
-#endif
-
   // Run the current MessageLoop. This blocks until Quit is called. Before
   // calling Run, be sure to grab an AsWeakPtr or the QuitClosure in order to
   // stop the MessageLoop asynchronously. MessageLoop::Quit and QuitNow will
   // also trigger a return from Run, but those are deprecated.
   void Run();
 
   // Run the current MessageLoop until it doesn't find any tasks or messages in
   // the queue (it goes idle). WARNING: This may never return! Only use this
   // when repeating tasks such as animated web pages have been shut down.
   void RunUntilIdle();
@@ skipping 61 matching lines @@
 
   // WeakPtrFactory for QuitClosure safety.
   base::WeakPtrFactory<RunLoop> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(RunLoop);
 };
 
 }  // namespace base
 
 #endif  // BASE_RUN_LOOP_H_