Remove GestureEventFilter and clean up related bits assuming that we turn on

content/browser/renderer_host/input/tap_suppression_controller_client.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_TAP_SUPPRESSION_CONTROLLER_CLIENT_H_
-#define CONTENT_BROWSER_RENDERER_HOST_INPUT_TAP_SUPPRESSION_CONTROLLER_CLIENT_H_
-
-namespace content {
-
-// This class provides an interface for callbacks made by
-// TapSuppressionController.
-class TapSuppressionControllerClient {
- public:
-  virtual ~TapSuppressionControllerClient() {}
-
-  // Derived classes should implement this function to return the maximum time
-  // they allow between a GestureFlingCancel and its corresponding tap down.
-  virtual int MaxCancelToDownTimeInMs() = 0;
-
-  // Derived classes should implement this function to return the maximum time
-  // they allow between a single tap's down and up events.
-  virtual int MaxTapGapTimeInMs() = 0;
-
-  // Called whenever the deferred tap down (if saved) should be dropped totally.
-  virtual void DropStashedTapDown() = 0;
-
-  // Called whenever the deferred tap down (if saved) should be forwarded to the
-  // renderer. The tap down should go back to normal path it was
-  // on before being deferred.
-  virtual void ForwardStashedTapDown() = 0;
-
- protected:
-  TapSuppressionControllerClient() {}
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(TapSuppressionControllerClient);
-};
-
-}  // namespace content
-
-#endif  // CONTENT_BROWSER_RENDERER_HOST_INPUT_TAP_SUPPRESSION_CONTROLLER_CLIENT_H_