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

Source/WebKit/chromium/src/WebViewImpl.cpp

Index: Source/WebKit/chromium/src/WebViewImpl.cpp
diff --git a/Source/WebKit/chromium/src/WebViewImpl.cpp b/Source/WebKit/chromium/src/WebViewImpl.cpp
index dd732f5136c940f128c2b12c2e3d106a5fc0eb30..be2077c6f4a6bdc892b43a0fa3b6712faad827fe 100644
--- a/Source/WebKit/chromium/src/WebViewImpl.cpp
+++ b/Source/WebKit/chromium/src/WebViewImpl.cpp
@@ -47,6 +47,7 @@
 #include "ContextMenuItem.h"
 #include "Cursor.h"
 #include "DOMUtilitiesPrivate.h"
+#include "DeviceMotionController.h"
 #include "DeviceOrientationClientProxy.h"
 #include "Document.h"
 #include "DocumentLoader.h"
@@ -492,6 +493,7 @@ WebViewImpl::WebViewImpl(WebViewClient* client)
 #endif
 
     provideContextFeaturesTo(m_page.get(), m_featureSwitchClient.get());
+    provideDeviceMotionTo(m_page.get());
     provideDeviceOrientationTo(m_page.get(), m_deviceOrientationClientProxy.get());
     provideGeolocationTo(m_page.get(), m_geolocationClientProxy.get());
     m_geolocationClientProxy->setController(GeolocationController::from(m_page.get()));