Improve DEFINE_STATIC_LOCAL()'s handling of Blink GCed objects.

third_party/WebKit/Source/modules/gamepad/GamepadDispatcher.cpp

 // 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.
 
 #include "modules/gamepad/GamepadDispatcher.h"
 
 #include "modules/gamepad/NavigatorGamepad.h"
 #include "public/platform/Platform.h"
 #include "wtf/TemporaryChange.h"
 
 namespace blink {
 
 GamepadDispatcher& GamepadDispatcher::instance()
 {
-    DEFINE_STATIC_LOCAL(Persistent<GamepadDispatcher>, gamepadDispatcher, (new GamepadDispatcher()));
-    return *gamepadDispatcher;
+    DEFINE_STATIC_LOCAL(GamepadDispatcher, gamepadDispatcher, (new GamepadDispatcher));
+    return gamepadDispatcher;
 }
 
 void GamepadDispatcher::sampleGamepads(WebGamepads& gamepads)
 {
     Platform::current()->sampleGamepads(gamepads);
 }
 
 GamepadDispatcher::GamepadDispatcher()
 {
 }
@@ skipping 31 matching lines @@
 {
     Platform::current()->startListening(WebPlatformEventTypeGamepad, this);
 }
 
 void GamepadDispatcher::stopListening()
 {
     Platform::current()->stopListening(WebPlatformEventTypeGamepad);
 }
 
 } // namespace blink