PlatformEventDispatcher::DispatchEvent() should return a PostDispatchAction

ui/events/platform/platform_event_dispatcher.h

 // 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.
 
 #ifndef UI_EVENTS_PLATFORM_PLATFORM_EVENT_DISPATCHER_H_
 #define UI_EVENTS_PLATFORM_PLATFORM_EVENT_DISPATCHER_H_
 
 #include "base/basictypes.h"
 #include "ui/events/events_export.h"
 #include "ui/events/platform/platform_event_types.h"
@@ skipping 14 matching lines @@
  public:
   // Returns whether this dispatcher wants to dispatch |event|.
   virtual bool CanDispatchEvent(const PlatformEvent& event) = 0;
 
   // Dispatches |event|. If this is not the default dispatcher, then the
   // dispatcher can request that the default dispatcher gets a chance to
   // dispatch the event by setting POST_DISPATCH_PERFORM_DEFAULT to the return
   // value. If the dispatcher has processed the event, and no other dispatcher
   // should be allowed to dispatch the event, then the dispatcher should set
   // POST_DISPATCH_STOP_PROPAGATION flag on the return value.
-  virtual uint32_t DispatchEvent(const PlatformEvent& event) = 0;
+  virtual PostDispatchAction DispatchEvent(const PlatformEvent& event) = 0;
 
  protected:
   virtual ~PlatformEventDispatcher() {}
 };
 
 }  // namespace ui
 
 #endif  // UI_EVENTS_PLATFORM_PLATFORM_EVENT_DISPATCHER_H_