input: Remove dead code.

content/browser/frame_host/render_widget_host_view_guest.cc

 // Copyright 2014 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/frame_host/render_widget_host_view_guest.h"
 
 #include <utility>
 
 #include "base/bind_helpers.h"
 #include "base/command_line.h"
@@ skipping 516 matching lines @@
     gesture_tap_event.global_y = screenPosition.y;
     GetOwnerRenderWidgetHostView()->ProcessGestureEvent(
         gesture_tap_event, ui::LatencyInfo(ui::SourceEventType::TOUCH));
 
     gesture_tap_event.SetType(blink::WebGestureEvent::kGestureTapCancel);
     GetOwnerRenderWidgetHostView()->ProcessGestureEvent(
         gesture_tap_event, ui::LatencyInfo(ui::SourceEventType::TOUCH));
   }
 }
 
-void RenderWidgetHostViewGuest::OnSetNeedsFlushInput() {
-  NOTIMPLEMENTED();
-}
-
 void RenderWidgetHostViewGuest::WheelEventAck(
     const blink::WebMouseWheelEvent& event,
     InputEventAckState ack_result) {
   if (ack_result == INPUT_EVENT_ACK_STATE_NOT_CONSUMED ||
       ack_result == INPUT_EVENT_ACK_STATE_NO_CONSUMER_EXISTS) {
     guest_->ResendEventToEmbedder(event);
   }
 }
 
 void RenderWidgetHostViewGuest::GestureEventAck(
@@ skipping 134 matching lines @@
     host_->ForwardGestureEvent(gesture_event);
     return;
   }
 }
 
 bool RenderWidgetHostViewGuest::HasEmbedderChanged() {
   return guest_ && guest_->has_attached_since_surface_set();
 }
 
 }  // namespace content