aura: Remove event-dispatch methods from WindowTreeHostDelegate interface.

ui/aura/root_window.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 "ui/aura/root_window.h"
 
 #include <vector>
 
 #include "base/bind.h"
 #include "base/command_line.h"
@@ skipping 620 matching lines @@
 bool RootWindow::CanDispatchToConsumer(ui::GestureConsumer* consumer) {
   Window* consumer_window = ConsumerToWindow(consumer);;
   return (consumer_window && consumer_window->GetRootWindow() == window());
 }
 
 void RootWindow::DispatchPostponedGestureEvent(ui::GestureEvent* event) {
   DispatchGestureEvent(event);
 }
 
 void RootWindow::DispatchCancelTouchEvent(ui::TouchEvent* event) {
-  OnHostTouchEvent(event);
+  DispatchDetails details = OnEventFromSource(event);
+  if (details.dispatcher_destroyed)
+    return;
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 // RootWindow, ui::LayerAnimationObserver implementation:
 
 void RootWindow::OnLayerAnimationEnded(
     ui::LayerAnimationSequence* animation) {
   host()->UpdateRootWindowSize(host_->GetBounds().size());
 }
 
 void RootWindow::OnLayerAnimationScheduled(
     ui::LayerAnimationSequence* animation) {
 }
 
 void RootWindow::OnLayerAnimationAborted(
     ui::LayerAnimationSequence* animation) {
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 // RootWindow, WindowTreeHostDelegate implementation:
 
-bool RootWindow::OnHostKeyEvent(ui::KeyEvent* event) {
-  DispatchDetails details = OnEventFromSource(event);
-  if (details.dispatcher_destroyed)
-    event->SetHandled();
-  return event->handled();
-}
-
-bool RootWindow::OnHostMouseEvent(ui::MouseEvent* event) {
-  DispatchDetails details = OnEventFromSource(event);
-  if (details.dispatcher_destroyed)
-    event->SetHandled();
-  return event->handled();
-}
-
-bool RootWindow::OnHostScrollEvent(ui::ScrollEvent* event) {
-  DispatchDetails details = OnEventFromSource(event);
-  if (details.dispatcher_destroyed)
-    event->SetHandled();
-  return event->handled();
-}
-
-bool RootWindow::OnHostTouchEvent(ui::TouchEvent* event) {
-  DispatchDetails details = OnEventFromSource(event);
-  if (details.dispatcher_destroyed)
-    event->SetHandled();
-  return event->handled();
-}
-
 void RootWindow::OnHostCancelMode() {
   ui::CancelModeEvent event;
   Window* focused_window = client::GetFocusClient(window())->GetFocusedWindow();
   DispatchDetails details =
       DispatchEvent(focused_window ? focused_window : window(), &event);
   if (details.dispatcher_destroyed)
     return;
 }
 
 void RootWindow::OnHostActivated() {
@@ skipping 258 matching lines @@
       break;
 
     default:
       NOTREACHED();
       break;
   }
   PreDispatchLocatedEvent(target, event);
 }
 
 }  // namespace aura