Implement media cast buttons

Source/core/html/HTMLMediaElement.cpp

Index: Source/core/html/HTMLMediaElement.cpp
diff --git a/Source/core/html/HTMLMediaElement.cpp b/Source/core/html/HTMLMediaElement.cpp
index 86ec6ffd1cbf01b7fa3a9448b3b356fe1b01e574..858f37d98c0f35f81bfc83fabb2b999a823680b5 100644
--- a/Source/core/html/HTMLMediaElement.cpp
+++ b/Source/core/html/HTMLMediaElement.cpp
@@ -354,6 +354,8 @@ HTMLMediaElement::HTMLMediaElement(const QualifiedName& tagName, Document& docum
     , m_tracksAreReady(true)
     , m_haveVisibleTextTrack(false)
     , m_processingPreferenceChange(false)
+    , m_remoteRoutesAvailable(false)
+    , m_casting(false)
 #if ENABLE(OILPAN)
     , m_isFinalizing(false)
     , m_closeMediaSourceWhenFinalizing(false)
@@ -2278,6 +2280,20 @@ void HTMLMediaElement::pause()
     updatePlayState();
 }
 
+void HTMLMediaElement::requestRemotePlayback()
+{
+    if (!m_player)
+        return;
+    m_player->requestRemotePlayback();

[acolwell GONE FROM CHROMIUM, 2014/08/05 19:36:34]

Use webMediaPlayer() here and below.

[acolwell GONE FROM CHROMIUM, 2014/08/05 19:36:34]

ASSERT(m_remoteRoutesAvailable) here and below so we can make sure the UI
doesn't spam the WebMediaPlayer?

[aberent, 2014/08/22 14:08:33]

Done.

[aberent, 2014/08/22 14:08:33]

Done.

+}
+
+void HTMLMediaElement::requestRemotePlaybackControl()
+{
+    if (!m_player)
+        return;
+    m_player->requestRemotePlaybackControl();
+}
+
 void HTMLMediaElement::closeMediaSource()
 {
     if (!m_mediaSource)
@@ -3167,6 +3183,27 @@ void HTMLMediaElement::mediaPlayerRequestSeek(double time)
     setCurrentTime(time, IGNORE_EXCEPTION);
 }
 
+void HTMLMediaElement::mediaPlayerRemoteRouteAvailabilityChanged(bool routesAvailable)
+{
+    m_remoteRoutesAvailable = routesAvailable;
+    if (hasMediaControls())
+        mediaControls()->refreshCastButtonVisibility();
+}
+
+void HTMLMediaElement::mediaPlayerConnectedToRemoteDevice()
+{
+    m_casting = true;
+    if (hasMediaControls())
+        mediaControls()->startedCasting();
+}
+
+void HTMLMediaElement::mediaPlayerDisconnectedFromRemoteDevice()
+{
+    m_casting = false;
+    if (hasMediaControls())
+        mediaControls()->stoppedCasting();
+}
+
 // MediaPlayerPresentation methods
 void HTMLMediaElement::mediaPlayerRepaint()
 {
@@ -3642,7 +3679,7 @@ bool HTMLMediaElement::createMediaControls()
 
 void HTMLMediaElement::configureMediaControls()
 {
-    if (!shouldShowControls() || !inDocument()) {

[acolwell GONE FROM CHROMIUM, 2014/08/05 19:36:34]

Doesn't removing this end up causing the controls to get created even in
situations where they shouldn't be shown? Why are you making this change?

[aberent, 2014/08/22 14:08:33]

The problem I have is that I need the overlay cast button precisely when I don't
have standard controls. The way I have done this is by including it in the
controls, always creating the controls, and controlling carefully their
visibility. The alternative, I think, would have been to have a second shadow
DOM, duplicating much of logic of the controls, but I could see this causing all
sorts of difficulties (I was particularly put off from that option by the
ASSERT_WITH_SECURITY_IMPLICATIONS on line 3659).

+    if (!inDocument()) {
         if (hasMediaControls())
             mediaControls()->hide();
         return;
@@ -3652,7 +3689,10 @@ void HTMLMediaElement::configureMediaControls()
         return;
 
     mediaControls()->reset();
-    mediaControls()->show();
+    if (shouldShowControls())
+        mediaControls()->show();
+    else
+        mediaControls()->hide();
 }
 
 void HTMLMediaElement::configureTextTrackDisplay(VisibilityChangeAssumption assumption)
@@ -3712,9 +3752,9 @@ void HTMLMediaElement::markCaptionAndSubtitleTracksAsUnconfigured()
 
 void* HTMLMediaElement::preDispatchEventHandler(Event* event)
 {
-    if (event && event->type() == EventTypeNames::webkitfullscreenchange)
+    if (event && event->type() == EventTypeNames::webkitfullscreenchange) {

[acolwell GONE FROM CHROMIUM, 2014/08/05 19:36:34]

nit: Revert. Change isn't necessary.

[aberent, 2014/08/22 14:08:33]

Done.

         configureMediaControls();
-
+    }
     return 0;
 }