aura: Use the existing notification system.

chrome/browser/notifications/balloon_collection_views.cc

 // Copyright (c) 2011 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 "chrome/browser/notifications/balloon_collection_impl.h"
 
 #include "chrome/browser/notifications/balloon.h"
 #include "chrome/browser/ui/views/notifications/balloon_view.h"
 #include "ui/base/events.h"
 #include "ui/gfx/rect.h"
@@ skipping 31 matching lines @@
 
 void BalloonCollectionImpl::DidProcessEvent(const base::NativeEvent& event) {
 #if defined(OS_WIN)
   switch (event.message) {
     case WM_MOUSEMOVE:
     case WM_MOUSELEAVE:
     case WM_NCMOUSELEAVE:
       HandleMouseMoveEvent();
       break;
   }
+#elif defined(USE_AURA)
+  // This is deliberately used only in linux. For an aura build on windows, the
+  // above block of code is fine.
+  switch (ui::EventTypeFromNative(event)) {
+    case ui::ET_MOUSE_MOVED:
+    case ui::ET_MOUSE_DRAGGED:
+    case ui::ET_MOUSE_EXITED:
+      HandleMouseMoveEvent();
+      break;
+    default:
+      break;
+  }
 #else
   NOTIMPLEMENTED();
 #endif
 }
 
 bool BalloonCollectionImpl::IsCursorInBalloonCollection() const {
 #if defined(OS_WIN)
   DWORD pos = GetMessagePos();
   gfx::Point cursor(pos);
 #else
@@ skipping 22 matching lines @@
   else
     NOTREACHED();
 
   PositionBalloons(true);
 }
 
 // static
 BalloonCollection* BalloonCollection::Create() {
   return new BalloonCollectionImpl();
 }