Implement the Blink part of the Device Motion API.

Source/core/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 1512 matching lines @@
             document->didAddTouchEventHandler(document);
         else if (eventType == eventNames().storageEvent)
             didAddStorageEventListener(this);
     }
 
     if (eventType == eventNames().unloadEvent)
         addUnloadEventListener(this);
     else if (eventType == eventNames().beforeunloadEvent && allowsBeforeUnloadListeners(this))
         addBeforeUnloadEventListener(this);
     else if (eventType == eventNames().devicemotionEvent && RuntimeEnabledFeatures::deviceMotionEnabled()) {
-        if (DeviceMotionController* controller = DeviceMotionController::from(page()))
-            controller->addDeviceEventListener(this);
+        if (DeviceMotionController* controller = DeviceMotionController::from(document()))
+            controller->startUpdating();
     } else if (eventType == eventNames().deviceorientationEvent && RuntimeEnabledFeatures::deviceOrientationEnabled()) {
         if (DeviceOrientationController* controller = DeviceOrientationController::from(page()))
             controller->addDeviceEventListener(this);
     }
 
     return true;
 }
 
 bool DOMWindow::removeEventListener(const AtomicString& eventType, EventListener* listener, bool useCapture)
 {
     if (!EventTarget::removeEventListener(eventType, listener, useCapture))
         return false;
 
     if (Document* document = this->document()) {
         if (eventType == eventNames().mousewheelEvent)
             document->didRemoveWheelEventHandler();
         else if (eventNames().isTouchEventType(eventType))
             document->didRemoveTouchEventHandler(document);
     }
 
     if (eventType == eventNames().unloadEvent)
         removeUnloadEventListener(this);
     else if (eventType == eventNames().beforeunloadEvent && allowsBeforeUnloadListeners(this))
         removeBeforeUnloadEventListener(this);
     else if (eventType == eventNames().devicemotionEvent) {
-        if (DeviceMotionController* controller = DeviceMotionController::from(page()))
-            controller->removeDeviceEventListener(this);
+        if (DeviceMotionController* controller = DeviceMotionController::from(document()))
+            controller->stopUpdating();
     } else if (eventType == eventNames().deviceorientationEvent) {
         if (DeviceOrientationController* controller = DeviceOrientationController::from(page()))
             controller->removeDeviceEventListener(this);
     }
 
     return true;
 }
 
 void DOMWindow::dispatchLoadEvent()
 {
@@ skipping 34 matching lines @@
 
     InspectorInstrumentation::didDispatchEventOnWindow(cookie);
 
     return result;
 }
 
 void DOMWindow::removeAllEventListeners()
 {
     EventTarget::removeAllEventListeners();
 
-    if (DeviceMotionController* controller = DeviceMotionController::from(page()))
-        controller->removeAllDeviceEventListeners(this);
+    if (DeviceMotionController* controller = DeviceMotionController::from(document()))
+        controller->stopUpdating();
     if (DeviceOrientationController* controller = DeviceOrientationController::from(page()))
         controller->removeAllDeviceEventListeners(this);
     if (Document* document = this->document())
         document->didRemoveEventTargetNode(document);
 
     removeAllUnloadEventListeners(this);
     removeAllBeforeUnloadEventListeners(this);
 }
 
 void DOMWindow::finishedLoading()
@@ skipping 249 matching lines @@
 
     Frame* child = frame->tree()->scopedChild(index);
     if (child)
         return child->document()->domWindow();
 
     return 0;
 }
 
 
 } // namespace WebCore