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 91ef6708e6f5e78594ef9b36ad751aec9955cc39..87de96b99a1ebb32f8dc7dd150974bac34caaca9 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_playingRemotely(false)
 #if ENABLE(OILPAN)
     , m_isFinalizing(false)
     , m_closeMediaSourceWhenFinalizing(false)
@@ -2280,6 +2282,22 @@ void HTMLMediaElement::pause()
     updatePlayState();
 }
 
+void HTMLMediaElement::requestRemotePlayback()
+{
+    if (!m_player)

[acolwell GONE FROM CHROMIUM, 2014/09/06 00:32:02]

Please add code to clearMediaPlayer() and createMediaPlayer() that sets
m_remoteRoutesAvailable to false when m_player assigned. I think if you do that
then this guard and the one in the method below aren't necessary.

[aberent, 2014/09/09 18:35:30]

Done.

+        return;
+    ASSERT(m_remoteRoutesAvailable);
+    webMediaPlayer()->requestRemotePlayback();
+}
+
+void HTMLMediaElement::requestRemotePlaybackControl()
+{
+    if (!m_player)
+        return;
+    ASSERT(m_remoteRoutesAvailable);
+    webMediaPlayer()->requestRemotePlaybackControl();
+}
+
 void HTMLMediaElement::closeMediaSource()
 {
     if (!m_mediaSource)
@@ -3194,6 +3212,27 @@ void HTMLMediaElement::mediaPlayerRequestSeek(double time)
     setCurrentTime(time, IGNORE_EXCEPTION);
 }
 
+void HTMLMediaElement::remoteRouteAvailabilityChanged(bool routesAvailable)
+{
+    m_remoteRoutesAvailable = routesAvailable;
+    if (hasMediaControls())
+        mediaControls()->refreshCastButtonVisibility();
+}
+
+void HTMLMediaElement::connectedToRemoteDevice()
+{
+    m_playingRemotely = true;
+    if (hasMediaControls())
+        mediaControls()->startedCasting();
+}
+
+void HTMLMediaElement::disconnectedFromRemoteDevice()
+{
+    m_playingRemotely = false;

[acolwell GONE FROM CHROMIUM, 2014/09/06 00:32:01]

You'll probably need to reset this on m_player assignment as well.

[aberent, 2014/09/09 18:35:30]

Done.

+    if (hasMediaControls())
+        mediaControls()->stoppedCasting();
+}
+
 // MediaPlayerPresentation methods
 void HTMLMediaElement::mediaPlayerRepaint()
 {
@@ -3647,7 +3686,7 @@ bool HTMLMediaElement::createMediaControls()
 
 void HTMLMediaElement::configureMediaControls()
 {
-    if (!shouldShowControls() || !inDocument()) {
+    if (!inDocument()) {
         if (hasMediaControls())
             mediaControls()->hide();
         return;
@@ -3657,7 +3696,10 @@ void HTMLMediaElement::configureMediaControls()
         return;
 
     mediaControls()->reset();
-    mediaControls()->show();
+    if (shouldShowControls())
+        mediaControls()->show();
+    else
+        mediaControls()->hide();
 }
 
 void HTMLMediaElement::configureTextTrackDisplay(VisibilityChangeAssumption assumption)