[Blink, RemotePlayback] Reject the prompt() with OperationError if there's a pending promise for th…

third_party/WebKit/LayoutTests/media/remoteplayback/prompt-twice-throws.html

Index: third_party/WebKit/LayoutTests/media/remoteplayback/prompt-twice-throws.html
diff --git a/third_party/WebKit/LayoutTests/media/remoteplayback/disable-remote-playback-prompt-throws.html b/third_party/WebKit/LayoutTests/media/remoteplayback/prompt-twice-throws.html
similarity index 78%
copy from third_party/WebKit/LayoutTests/media/remoteplayback/disable-remote-playback-prompt-throws.html
copy to third_party/WebKit/LayoutTests/media/remoteplayback/prompt-twice-throws.html
index 143456587902254c92aa00c145be929d9f6cf7d7..367f69dba210c2e9d801a7da6b05648ab2c8862a 100644
--- a/third_party/WebKit/LayoutTests/media/remoteplayback/disable-remote-playback-prompt-throws.html
+++ b/third_party/WebKit/LayoutTests/media/remoteplayback/prompt-twice-throws.html
@@ -10,14 +10,16 @@
         <script>
             promise_test(function(test)
             {
+                internals.settings.setRemotePlaybackRequiresUserGesture(false);

[mlamouri (slow - plz ping), 2016/09/22 09:22:43]

nstead, I think you can wrap this with a method that either simulate a click
with EventSender or requires a click on a button so the test can be shared, see:
https://cs.chromium.org/chromium/src/third_party/WebKit/LayoutTests/media/med...

[whywhat, 2016/09/30 19:11:33]

Done. I anticipate the flag to be needed by integration tests in the future
though.

                 var v = document.createElement('video');
                 v.src = findMediaFile('video', 'content/test');
-                v.disableRemotePlayback = true
                 document.body.appendChild(v);
 
+                v.remote.prompt();
+
                 return promise_rejects(
                     test,
-                    new DOMException('disableRemotePlayback attribute is present.', 'InvalidStateError'),
+                    new DOMException('A prompt is already being shown for this media element.', 'OperationError'),
                     v.remote.prompt());
             }, 'Test that calling prompt() when disableRemotePlayback attribute is set throws an exception.');
         </script>