Implement MediaMetadata artwork in content

content/renderer/media/android/webmediasession_android.cc

Index: content/renderer/media/android/webmediasession_android.cc
diff --git a/content/renderer/media/android/webmediasession_android.cc b/content/renderer/media/android/webmediasession_android.cc
index c1a936d1e25c6b70a24dd21cf26fdc57c03a66dd..d13576f5f149cda03354911c62eac3665d461633 100644
--- a/content/renderer/media/android/webmediasession_android.cc
+++ b/content/renderer/media/android/webmediasession_android.cc
@@ -10,6 +10,8 @@
 #include "base/memory/ptr_util.h"
 #include "content/public/common/media_metadata.h"
 #include "content/renderer/media/android/renderer_media_session_manager.h"
+#include "third_party/WebKit/public/platform/WebIconSizesParser.h"
+#include "third_party/WebKit/public/platform/WebSize.h"
 #include "third_party/WebKit/public/platform/modules/mediasession/WebMediaMetadata.h"
 
 namespace content {
@@ -42,6 +44,14 @@ void WebMediaSessionAndroid::setMetadata(
     metadata.title = web_metadata->title;
     metadata.artist = web_metadata->artist;
     metadata.album = web_metadata->album;
+    for (const auto& web_artwork : web_metadata->artwork) {
+      MediaMetadata::Artwork artwork;
+      artwork.src = GURL(base::string16(web_artwork.src));

[palmer, 2016/06/14 22:06:32]

Right, so it's a URL. Let's check that basic GURL sanity holds, such as
is_valid(), IsStandard(), SchemeIsHTTPOrHTTPS(), et c.

[Zhiqiang Zhang (Slow), 2016/06/20 18:26:49]

Done. See the other reply for details.

+      artwork.type = web_artwork.type;
+      blink::WebVector<blink::WebSize> web_sizes =
+          blink::WebIconSizesParser::parseIconSizes(web_artwork.sizes);
+      std::copy(web_sizes.begin(), web_sizes.end(), artwork.sizes.begin());
+    }
   }
 
   session_manager_->SetMetadata(media_session_id_, metadata);