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

content/browser/renderer_host/input/touchpad_tap_suppression_controller.cc

-// 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.
-
-#include "content/browser/renderer_host/input/touchpad_tap_suppression_controller.h"
-
-#include "content/browser/renderer_host/input/tap_suppression_controller.h"
-#include "content/browser/renderer_host/input/tap_suppression_controller_client.h"
-
-// The default implementation of the TouchpadTapSuppressionController does not
-// suppress taps. Touchpad tap suppression is needed only on CrOS.
-
-namespace content {
-
-TouchpadTapSuppressionController::TouchpadTapSuppressionController(
-    TouchpadTapSuppressionControllerClient* /* client */)
-    : client_(NULL) {}
-
-TouchpadTapSuppressionController::~TouchpadTapSuppressionController() {}
-
-void TouchpadTapSuppressionController::GestureFlingCancel() {}
-
-void TouchpadTapSuppressionController::GestureFlingCancelAck(
-    bool /*processed*/) {
-}
-
-bool TouchpadTapSuppressionController::ShouldDeferMouseDown(
-    const MouseEventWithLatencyInfo& /*event*/) {
-  return false;
-}
-
-bool TouchpadTapSuppressionController::ShouldSuppressMouseUp() { return false; }
-
-int TouchpadTapSuppressionController::MaxCancelToDownTimeInMs() {
-  return 0;
-}
-
-int TouchpadTapSuppressionController::MaxTapGapTimeInMs() {
-  return 0;
-}
-
-void TouchpadTapSuppressionController::DropStashedTapDown() {
-}
-
-void TouchpadTapSuppressionController::ForwardStashedTapDown() {
-}
-
-}  // namespace content