Consolidate message observer API for win and aura (and touch).

chrome/browser/ui/views/tabs/dragged_tab_controller.h

Index: chrome/browser/ui/views/tabs/dragged_tab_controller.h
diff --git a/chrome/browser/ui/views/tabs/dragged_tab_controller.h b/chrome/browser/ui/views/tabs/dragged_tab_controller.h
index 10ed0d0821070fc315205065c9ce0b9aa56c920f..1dc57cde323d1dec54d050e889906c2e6c49ec33 100644
--- a/chrome/browser/ui/views/tabs/dragged_tab_controller.h
+++ b/chrome/browser/ui/views/tabs/dragged_tab_controller.h
@@ -153,11 +153,10 @@ class DraggedTabController : public TabContentsDelegate,
                        const NotificationDetails& details) OVERRIDE;
 
   // Overridden from MessageLoop::Observer:
-#if defined(OS_WIN)
-  virtual void WillProcessMessage(const MSG& msg) OVERRIDE;
-  virtual void DidProcessMessage(const MSG& msg) OVERRIDE;
-#elif defined(TOUCH_UI)
-  virtual EventStatus WillProcessXEvent(XEvent* xevent) OVERRIDE;
+#if defined(OS_WIN) || defined(TOUCH_UI) || defined(USE_AURA)
+  virtual base::EventStatus WillProcessEvent(
+      const base::NativeEvent& msg) OVERRIDE;
+  virtual void DidProcessEvent(const base::NativeEvent& msg) OVERRIDE;
 #elif defined(TOOLKIT_USES_GTK)
   virtual void WillProcessEvent(GdkEvent* event) OVERRIDE;
   virtual void DidProcessEvent(GdkEvent* event) OVERRIDE;