Don't show media controls when there is a persistent video.

third_party/WebKit/Source/core/page/Page.cpp

Index: third_party/WebKit/Source/core/page/Page.cpp
diff --git a/third_party/WebKit/Source/core/page/Page.cpp b/third_party/WebKit/Source/core/page/Page.cpp
index d5771fbc942596547437f4eb2b820f1b20f1b343..6f484137bb3d1a33fcdce643f10d339ea68ae38d 100644
--- a/third_party/WebKit/Source/core/page/Page.cpp
+++ b/third_party/WebKit/Source/core/page/Page.cpp
@@ -437,6 +437,16 @@ void Page::settingsChanged(SettingsDelegate::ChangeType changeType) {
         }
       }
     } break;
+    case SettingsDelegate::MediaControlsChange:
+      for (Frame* frame = mainFrame(); frame;
+           frame = frame->tree().traverseNext()) {
+        if (!frame->isLocalFrame())
+          continue;
+        Document* doc = toLocalFrame(frame)->document();
+        if (doc)
+          HTMLMediaElement::onMediaControlsEnabledChange(doc);
+      }
+      break;
   }
 }