Implement MediaMetadata artwork in Blink

third_party/WebKit/Source/modules/mediasession/MediaSessionTest.cpp

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "modules/mediasession/MediaSession.h"
 
 #include "core/dom/Document.h"
 #include "core/testing/DummyPageHolder.h"
 #include "modules/mediasession/MediaMetadata.h"
 #include "modules/mediasession/MediaMetadataInit.h"
@@ skipping 72 matching lines @@
 
     EXPECT_EQ(nullptr, mediaSession->metadata());
 }
 
 TEST_F(MediaSessionTest, SetMetadata_NotNull)
 {
     MockWebMediaSession* mockWebMediaSession = new MockWebMediaSession;
     MediaSession* mediaSession = createMediaSession(mockWebMediaSession);
 
     EXPECT_CALL(*mockWebMediaSession, setMetadata(testing::NotNull()));
-    mediaSession->setMetadata(MediaMetadata::create(MediaMetadataInit()));
+    mediaSession->setMetadata(MediaMetadata::create(&document(), MediaMetadataInit()));
 
     EXPECT_NE(nullptr, mediaSession->metadata());
 }
 
 } // namespace
 } // namespace blink