Add initial Blink-side support for the Screen Orientation API

Source/web/WebViewImpl.cpp

Index: Source/web/WebViewImpl.cpp
diff --git a/Source/web/WebViewImpl.cpp b/Source/web/WebViewImpl.cpp
index 55230e4b770aae91a960ff1835770c6987bb8360..5e5de5a1b3a48dddad5697d206a857941af0cdd5 100644
--- a/Source/web/WebViewImpl.cpp
+++ b/Source/web/WebViewImpl.cpp
@@ -46,6 +46,7 @@
 #include "PopupContainer.h"
 #include "PrerendererClientImpl.h"
 #include "RuntimeEnabledFeatures.h"
+#include "ScreenOrientationClientProxy.h"
 #include "SpeechInputClientImpl.h"
 #include "SpeechRecognitionClientProxy.h"
 #include "StorageQuotaClientImpl.h"
@@ -123,6 +124,7 @@
 #include "modules/geolocation/GeolocationController.h"
 #include "modules/indexeddb/InspectorIndexedDBAgent.h"
 #include "modules/notifications/NotificationController.h"
+#include "modules/screen_orientation/ScreenOrientationController.h"
 #include "painting/ContinuousPainter.h"
 #include "platform/ContextMenu.h"
 #include "platform/ContextMenuItem.h"
@@ -367,6 +369,7 @@ WebViewImpl::WebViewImpl(WebViewClient* client)
 #endif
     , m_speechRecognitionClient(SpeechRecognitionClientProxy::create(client ? client->speechRecognizer() : 0))
     , m_geolocationClientProxy(adoptPtr(new GeolocationClientProxy(client ? client->geolocationClient() : 0)))
+    , m_screenOrientationClientProxy(ScreenOrientationClientProxy::create(client ? client->screenOrientationClient() : 0))
     , m_userMediaClientImpl(this)
     , m_midiClientProxy(adoptPtr(new MIDIClientProxy(client ? client->webMIDIClient() : 0)))
     , m_navigatorContentUtilsClient(NavigatorContentUtilsClientImpl::create(this))
@@ -409,6 +412,9 @@ WebViewImpl::WebViewImpl(WebViewClient* client)
     provideGeolocationTo(m_page.get(), m_geolocationClientProxy.get());
     m_geolocationClientProxy->setController(GeolocationController::from(m_page.get()));
 
+    provideScreenOrientation(m_page.get(), m_screenOrientationClientProxy.get());
+    m_screenOrientationClientProxy->setController(ScreenOrientationController::from(m_page.get()));
+
     provideLocalFileSystemTo(m_page.get(), LocalFileSystemClient::create());
     provideDatabaseClientTo(m_page.get(), DatabaseClientImpl::create());
     InspectorIndexedDBAgent::provideTo(m_page.get());