Implement MediaMetadata artwork in content

content/browser/media/android/browser_media_session_manager.cc

Index: content/browser/media/android/browser_media_session_manager.cc
diff --git a/content/browser/media/android/browser_media_session_manager.cc b/content/browser/media/android/browser_media_session_manager.cc
index a7e5fd5bbfa28e38fdeb8ac7290cacdf3c34f1ec..897ee236a1b674a54de0a196d52d4b7e67ac3e99 100644
--- a/content/browser/media/android/browser_media_session_manager.cc
+++ b/content/browser/media/android/browser_media_session_manager.cc
@@ -4,6 +4,8 @@
 
 #include "content/browser/media/android/browser_media_session_manager.h"
 
+#include "content/browser/media/session/media_session.h"
+#include "content/browser/web_contents/web_contents_impl.h"
 #include "content/common/media/media_session_messages_android.h"
 #include "content/public/browser/render_frame_host.h"
 #include "content/public/browser/render_process_host.h"
@@ -37,6 +39,12 @@ void BrowserMediaSessionManager::OnSetMetadata(
       insecure_metadata.artist.substr(0, MediaMetadata::kMaxIPCStringLength);
   metadata.album =
       insecure_metadata.album.substr(0, MediaMetadata::kMaxIPCStringLength);
+  for (const auto& artwork : insecure_metadata.artwork) {
+    auto sanitized_artwork =
+        MediaMetadata::SanitizeArtwork(artwork);

[jochen (gone - plz use gerrit), 2016/06/27 08:12:40]

should we kill the renderer if the artwork isn't sane at this point?

[Zhiqiang Zhang (Slow), 2016/06/28 13:57:00]

Yes, the logic is already in line 49.

+    if (sanitized_artwork)
+      metadata.artwork.push_back(sanitized_artwork.value());
+  }
 
   if (metadata != insecure_metadata) {
     render_frame_host_->GetProcess()->ShutdownForBadMessage();