events: Update key-event handlers to not return EventResult.

ash/wm/window_cycle_controller.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 "ash/wm/window_cycle_controller.h"
 
 #include <algorithm>
 
 #include "ash/shell_delegate.h"
 #include "ash/shell_window_ids.h"
@@ skipping 16 matching lines @@
 };
 
 // Filter to watch for the termination of a keyboard gesture to cycle through
 // multiple windows.
 class WindowCycleEventFilter : public ui::EventHandler {
  public:
   WindowCycleEventFilter();
   virtual ~WindowCycleEventFilter();
 
   // Overridden from ui::EventHandler:
-  virtual ui::EventResult OnKeyEvent(ui::KeyEvent* event) OVERRIDE;
+  virtual void OnKeyEvent(ui::KeyEvent* event) OVERRIDE;
  private:
   DISALLOW_COPY_AND_ASSIGN(WindowCycleEventFilter);
 };
 
 // Watch for all keyboard events by filtering the root window.
 WindowCycleEventFilter::WindowCycleEventFilter() {
 }
 
 WindowCycleEventFilter::~WindowCycleEventFilter() {
 }
 
-ui::EventResult WindowCycleEventFilter::OnKeyEvent(ui::KeyEvent* event) {
+void WindowCycleEventFilter::OnKeyEvent(ui::KeyEvent* event) {
   // Views uses VKEY_MENU for both left and right Alt keys.
   if (event->key_code() == ui::VKEY_MENU &&
       event->type() == ui::ET_KEY_RELEASED) {
     Shell::GetInstance()->window_cycle_controller()->AltKeyReleased();
     // Warning: |this| will be deleted from here on.
   }
-  return ui::ER_UNHANDLED;  // Always let the event propagate.
 }
 
 // Adds all the children of |window| to |windows|.
 void AddAllChildren(aura::Window* window,
                     WindowCycleList::WindowList* windows) {
   const WindowCycleList::WindowList& children(window->children());
   windows->insert(windows->end(), children.begin(), children.end());
 }
 
 // Adds all the children of all of |window|s children to |windows|.
@@ skipping 217 matching lines @@
   mru_windows_.remove(window);
   if (window->id() == internal::kShellWindowId_WorkspaceContainer)
     window->RemoveObserver(this);
 }
 
 void WindowCycleController::OnWindowDestroying(aura::Window* window) {
   window->RemoveObserver(this);
 }
 
 }  // namespace ash