Implement MediaMetadata artwork in Blink

third_party/WebKit/Source/modules/mediasession/MediaMetadata.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/MediaMetadata.h"
 
+#include "core/dom/ExecutionContext.h"
+#include "modules/mediasession/MediaArtwork.h"
 #include "modules/mediasession/MediaMetadataInit.h"
-#include "wtf/text/WTFString.h"
 
 namespace blink {
 
 // static
-MediaMetadata* MediaMetadata::create(const MediaMetadataInit& metadata)
+MediaMetadata* MediaMetadata::create(ExecutionContext* context, const MediaMetadataInit& metadata)
 {
-    return new MediaMetadata(metadata);
+    return new MediaMetadata(context, metadata);
 }
 
-MediaMetadata::MediaMetadata(const MediaMetadataInit& metadata)
+MediaMetadata::MediaMetadata(ExecutionContext* context, const MediaMetadataInit& metadata)
 {
-    m_data.title = metadata.title();
-    m_data.artist = metadata.artist();
-    m_data.album = metadata.album();
+    m_title = metadata.title();
+    m_artist = metadata.artist();
+    m_album = metadata.album();
+    for (const auto &artwork : metadata.artworks())
+        m_artworks.append(MediaArtwork::create(context, artwork));
 }
 
 String MediaMetadata::title() const
 {
-    return m_data.title;
+    return m_title;
 }
 
 String MediaMetadata::artist() const
 {
-    return m_data.artist;
+    return m_artist;
 }
 
 String MediaMetadata::album() const
 {
-    return m_data.album;
+    return m_album;
+}
+
+const HeapVector<Member<MediaArtwork>>& MediaMetadata::artworks() const
+{
+    return m_artworks;
+}
+
+MediaMetadata::operator WebMediaMetadata() const
+{
+    WebMediaMetadata webMetadata;
+    webMetadata.title = m_title;
+    webMetadata.artist = m_artist;
+    webMetadata.album = m_album;
+    WebVector<WebMediaArtwork> webArtworks(m_artworks.size());
+    for (size_t i = 0; i < m_artworks.size(); ++i) {
+        webArtworks[i] = *m_artworks[i]->data();
+    }
+    webMetadata.artworks.swap(webArtworks);
+    return webMetadata;
+}
+
+DEFINE_TRACE(MediaMetadata)
+{
+    visitor->trace(m_artworks);
 }
 
 } // namespace blink