Create Pepper-based CDM for EME WD (Blink changes)

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 370 matching lines @@
     pageClients.contextMenuClient = &m_contextMenuClientImpl;
     pageClients.editorClient = &m_editorClientImpl;
     pageClients.dragClient = &m_dragClientImpl;
     pageClients.inspectorClient = &m_inspectorClientImpl;
     pageClients.backForwardClient = &m_backForwardClientImpl;
     pageClients.spellCheckerClient = &m_spellCheckerClientImpl;
     pageClients.storageClient = &m_storageClientImpl;
 
     m_page = adoptPtr(new Page(pageClients));
     provideUserMediaTo(*m_page, &m_userMediaClientImpl);
+    provideMediaKeysTo(*m_page, &m_mediaKeysClientImpl);
     provideMIDITo(*m_page, m_midiClientProxy.get());
 #if ENABLE(INPUT_SPEECH)
     provideSpeechInputTo(*m_page, m_speechInputClient.get());
 #endif
     provideSpeechRecognitionTo(*m_page, m_speechRecognitionClient.get());
     provideNotification(*m_page, notificationPresenterImpl());
     provideNavigatorContentUtilsTo(*m_page, m_navigatorContentUtilsClient.get());
 
     provideContextFeaturesTo(*m_page, m_featureSwitchClient.get());
     if (RuntimeEnabledFeatures::deviceOrientationEnabled())
@@ skipping 3597 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