input: Remove dead code.

content/browser/renderer_host/input/synthetic_gesture_controller.h

 // Copyright 2013 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_BROWSER_RENDERER_HOST_INPUT_SYNTHETIC_GESTURE_CONTROLLER_H_
 #define CONTENT_BROWSER_RENDERER_HOST_INPUT_SYNTHETIC_GESTURE_CONTROLLER_H_
 
 #include <memory>
 #include <queue>
 #include <utility>
@@ skipping 14 matching lines @@
 
 // Controls a synthetic gesture.
 // Repeatedly invokes the gesture object's ForwardInputEvent method to send
 // input events to the platform until the gesture has finished.
 class CONTENT_EXPORT SyntheticGestureController {
  public:
   class Delegate {
    public:
     virtual ~Delegate() {}
 
-    // Requests a single begin frame. The passed callback is run on the next
-    // begin frame message.
-    virtual void RequestBeginFrameForSynthesizedInput(
-        base::OnceClosure callback) = 0;
-
     // Returns whether any gesture created by dispatched input events has
     // completed or not.
     virtual bool HasGestureStopped() = 0;
   };
   SyntheticGestureController(
       Delegate* delegate,
       std::unique_ptr<SyntheticGestureTarget> gesture_target);
   virtual ~SyntheticGestureController();
 
   typedef base::Callback<void(SyntheticGesture::Result)>
@@ skipping 64 matching lines @@
 
   base::RepeatingTimer dispatch_timer_;
   base::WeakPtrFactory<SyntheticGestureController> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(SyntheticGestureController);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_INPUT_SYNTHETIC_GESTURE_CONTROLLER_H_