[Cast] Refresh cast button visibility when disableRemotePlayback attribute changes

third_party/WebKit/Source/core/html/HTMLMediaElement.cpp

Index: third_party/WebKit/Source/core/html/HTMLMediaElement.cpp
diff --git a/third_party/WebKit/Source/core/html/HTMLMediaElement.cpp b/third_party/WebKit/Source/core/html/HTMLMediaElement.cpp
index b17a53a2ca6cd96c137b027b624f8128d17f453b..b52842c7489b91d0214b6c4c7667d0c5d5ea03b9 100644
--- a/third_party/WebKit/Source/core/html/HTMLMediaElement.cpp
+++ b/third_party/WebKit/Source/core/html/HTMLMediaElement.cpp
@@ -589,6 +589,8 @@ void HTMLMediaElement::parseAttribute(const QualifiedName& name,
     setPlayerPreload();
   } else if (name == disableremoteplaybackAttr) {
     UseCounter::count(document(), UseCounter::DisableRemotePlaybackAttribute);
+    if (mediaControls())

[mlamouri (slow - plz ping), 2016/10/15 00:03:48]

If you are worried about calling this too often, you can do `if (mediaControls()
&& (oldValue != value))` but I think this is not very important because it would
only apply to people doing `video.disableRemotePlayback = true;` when the value
was already true. Probably not that big of a deal.

[whywhat, 2016/10/15 00:33:21]

Done. Missed the fact we get the old value in the parameters.

+      mediaControls()->refreshCastButtonVisibility();
   } else {
     HTMLElement::parseAttribute(name, oldValue, value);
   }