WebKit & WebCore part of the device motion implementation using the platform layer.

Source/WebCore/page/DOMWindow.cpp

 /*
  * Copyright (C) 2006, 2007, 2008, 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 1604 matching lines @@
         else if (eventType == eventNames().storageEvent)
             didAddStorageEventListener(this);
     }
 
     if (eventType == eventNames().unloadEvent)
         addUnloadEventListener(this);
     else if (eventType == eventNames().beforeunloadEvent && allowsBeforeUnloadListeners(this))
         addBeforeUnloadEventListener(this);
 #if ENABLE(DEVICE_ORIENTATION)
     else if (eventType == eventNames().devicemotionEvent && RuntimeEnabledFeatures::deviceMotionEnabled()) {
-        if (DeviceMotionController* controller = DeviceMotionController::from(page()))
-            controller->addDeviceEventListener(this);
+        DeviceMotionController::shared().addDeviceEventListener(this);
     } else if (eventType == eventNames().deviceorientationEvent && RuntimeEnabledFeatures::deviceOrientationEnabled()) {
         if (DeviceOrientationController* controller = DeviceOrientationController::from(page()))
             controller->addDeviceEventListener(this);
     }
 #endif
 
 #if ENABLE(PROXIMITY_EVENTS)
     else if (eventType == eventNames().webkitdeviceproximityEvent) {
         if (DeviceProximityController* controller = DeviceProximityController::from(page()))
             controller->addDeviceEventListener(this);
@@ skipping 14 matching lines @@
         else if (eventNames().isTouchEventType(eventType))
             document->didRemoveTouchEventHandler(document);
     }
 
     if (eventType == eventNames().unloadEvent)
         removeUnloadEventListener(this);
     else if (eventType == eventNames().beforeunloadEvent && allowsBeforeUnloadListeners(this))
         removeBeforeUnloadEventListener(this);
 #if ENABLE(DEVICE_ORIENTATION)
     else if (eventType == eventNames().devicemotionEvent) {
-        if (DeviceMotionController* controller = DeviceMotionController::from(page()))
-            controller->removeDeviceEventListener(this);
+        DeviceMotionController::shared().removeDeviceEventListener(this);
     } else if (eventType == eventNames().deviceorientationEvent) {
         if (DeviceOrientationController* controller = DeviceOrientationController::from(page()))
             controller->removeDeviceEventListener(this);
     }
 #endif
 
 #if ENABLE(PROXIMITY_EVENTS)
     else if (eventType == eventNames().webkitdeviceproximityEvent) {
         if (DeviceProximityController* controller = DeviceProximityController::from(page()))
             controller->removeDeviceEventListener(this);
@@ skipping 43 matching lines @@
     InspectorInstrumentation::didDispatchEventOnWindow(cookie);
 
     return result;
 }
 
 void DOMWindow::removeAllEventListeners()
 {
     EventTarget::removeAllEventListeners();
 
 #if ENABLE(DEVICE_ORIENTATION)
-    if (DeviceMotionController* controller = DeviceMotionController::from(page()))
-        controller->removeAllDeviceEventListeners(this);
+    DeviceMotionController::shared().removeAllDeviceEventListeners(this);
     if (DeviceOrientationController* controller = DeviceOrientationController::from(page()))
         controller->removeAllDeviceEventListeners(this);
 #endif
 #if ENABLE(TOUCH_EVENTS)
     if (Document* document = this->document())
         document->didRemoveEventTargetNode(document);
 #endif
 
 #if ENABLE(PROXIMITY_EVENTS)
     if (DeviceProximityController* controller = DeviceProximityController::from(page()))
@@ skipping 258 matching lines @@
     WindowFeatures windowFeatures(dialogFeaturesString, screenAvailableRect(m_frame->view()));
     Frame* dialogFrame = createWindow(urlString, emptyAtom, windowFeatures,
         activeWindow, firstFrame, m_frame, function, functionContext);
     if (!dialogFrame)
         return;
 
     dialogFrame->page()->chrome()->runModal();
 }
 
 } // namespace WebCore