input: Remove now dead code.

content/browser/renderer_host/render_widget_host_impl.cc

 // 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.
 
 #include "content/browser/renderer_host/render_widget_host_impl.h"
 
 #include <math.h>
 
 #include <set>
 #include <tuple>
@@ skipping 2185 matching lines @@
     // main thread.
     if (ack_source == InputEventAckSource::MAIN_THREAD)
       RestartHangMonitorTimeoutIfNecessary();
   }
 }
 
 void RenderWidgetHostImpl::OnHasTouchEventHandlers(bool has_handlers) {
   has_touch_handler_ = has_handlers;
 }
 
-void RenderWidgetHostImpl::DidFlush() {
-}
-
 void RenderWidgetHostImpl::DidOverscroll(
     const ui::DidOverscrollParams& params) {
   if (view_)
     view_->DidOverscroll(params);
 }
 
 void RenderWidgetHostImpl::DidStopFlinging() {
   is_in_touchpad_gesture_fling_ = false;
   if (view_)
     view_->DidStopFlinging();
@@ skipping 441 matching lines @@
           device::mojom::WakeLockType::PreventDisplaySleep,
           device::mojom::WakeLockReason::ReasonOther, "GetSnapshot",
           std::move(request));
     }
   }
   return wake_lock_.get();
 }
 #endif
 
 }  // namespace content