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

Source/WebCore/history/PageCache.cpp

 /*
  * Copyright (C) 2007 Apple Inc.  All rights reserved.
  *
  * 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
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 225 matching lines @@
     
     if (!page->backForward()->isActive()) {
         PCLOG("   -The back/forward list is disabled or has 0 capacity");
         rejectReasons |= 1 << DisabledBackForwardList;
     }
     if (!page->settings()->usesPageCache()) {
         PCLOG("   -Page settings says b/f cache disabled");
         rejectReasons |= 1 << DisabledPageCache;
     }
 #if ENABLE(DEVICE_ORIENTATION)
-    if (DeviceMotionController::shared().isActiveAt(page)) {
+    if (DeviceMotionController::isActiveAt(page)) {
         PCLOG("   -Page is using DeviceMotion");
         rejectReasons |= 1 << UsesDeviceMotion;
     }
     if (DeviceOrientationController::isActiveAt(page)) {
         PCLOG("   -Page is using DeviceOrientation");
         rejectReasons |= 1 << UsesDeviceOrientation;
     }
 #endif
 #if ENABLE(PROXIMITY_EVENTS)
     if (DeviceProximityController::isActiveAt(page)) {
@@ skipping 124 matching lines @@
     // store the final page we end up on.
     // No point writing to the cache on a reload or loadSame, since we will just write
     // over it again when we leave that page.
     FrameLoadType loadType = page->mainFrame()->loader()->loadType();
     
     return m_capacity > 0
         && canCachePageContainingThisFrame(page->mainFrame())
         && page->backForward()->isActive()
         && page->settings()->usesPageCache()
 #if ENABLE(DEVICE_ORIENTATION)
-        && !DeviceMotionController::shared().isActiveAt(page)
+        && !DeviceMotionController::isActiveAt(page)
         && !DeviceOrientationController::isActiveAt(page)
 #endif
 #if ENABLE(PROXIMITY_EVENTS)
         && !DeviceProximityController::isActiveAt(page)
 #endif
         && loadType != FrameLoadTypeReload
         && loadType != FrameLoadTypeReloadFromOrigin
         && loadType != FrameLoadTypeSame;
 }
 
@@ skipping 126 matching lines @@
     if (!item->m_prev) {
         ASSERT(item == m_head);
         m_head = item->m_next;
     } else {
         ASSERT(item != m_head);
         item->m_prev->m_next = item->m_next;
     }
 }
 
 } // namespace WebCore