Use WebViewClient instead of BlinkPlatform for screen lock.

Source/web/WebViewImpl.cpp

 /*
  * Copyright (C) 2011, 2012 Google 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 67 matching lines @@
 #include "core/rendering/FastTextAutosizer.h"
 #include "core/rendering/RenderView.h"
 #include "core/rendering/RenderWidget.h"
 #include "core/rendering/TextAutosizer.h"
 #include "core/rendering/compositing/RenderLayerCompositor.h"
 #include "modules/device_orientation/DeviceOrientationInspectorAgent.h"
 #include "modules/encryptedmedia/MediaKeysController.h"
 #include "modules/geolocation/GeolocationController.h"
 #include "modules/indexeddb/InspectorIndexedDBAgent.h"
 #include "modules/push_messaging/PushController.h"
+#include "modules/screen_orientation/ScreenOrientationController.h"
 #include "platform/ContextMenu.h"
 #include "platform/ContextMenuItem.h"
 #include "platform/Cursor.h"
 #include "platform/KeyboardCodes.h"
 #include "platform/NotImplemented.h"
 #include "platform/OverscrollTheme.h"
 #include "platform/PlatformGestureEvent.h"
 #include "platform/PlatformKeyboardEvent.h"
 #include "platform/PlatformMouseEvent.h"
 #include "platform/PlatformWheelEvent.h"
@@ skipping 329 matching lines @@
     provideStorageQuotaClientTo(*m_page, StorageQuotaClientImpl::create());
     m_page->setValidationMessageClient(ValidationMessageClientImpl::create(*this));
     provideWorkerGlobalScopeProxyProviderTo(*m_page, WorkerGlobalScopeProxyProviderImpl::create());
 
     m_page->makeOrdinary();
 
     if (m_client) {
         providePushControllerTo(*m_page, m_client->webPushClient());
         setDeviceScaleFactor(m_client->screenInfo().deviceScaleFactor);
         setVisibilityState(m_client->visibilityState(), true);
+        if (RuntimeEnabledFeatures::screenOrientationEnabled())
+            ScreenOrientationController::provideTo(*m_page, m_client->webScreenOrientationClient());
     }
 
     m_inspectorSettingsMap = adoptPtr(new SettingsMap);
 }
 
 WebViewImpl::~WebViewImpl()
 {
     ASSERT(!m_page);
 }
 
@@ skipping 3604 matching lines @@
     const PageScaleConstraints& constraints = m_pageScaleConstraintsSet.pageDefinedConstraints();
 
     if (!mainFrameImpl() || !mainFrameImpl()->frameView())
         return false;
 
     return mainFrameImpl()->frameView()->layoutSize().width() == m_size.width
         || (constraints.minimumScale == constraints.maximumScale && constraints.minimumScale != -1);
 }
 
 } // namespace blink