[v8] Check for availablity of the media engine

third_party/WebKit/WebCore/bindings/v8/custom/V8DOMWindowCustom.cpp

Index: third_party/WebKit/WebCore/bindings/v8/custom/V8DOMWindowCustom.cpp
diff --git a/third_party/WebKit/WebCore/bindings/v8/custom/V8DOMWindowCustom.cpp b/third_party/WebKit/WebCore/bindings/v8/custom/V8DOMWindowCustom.cpp
index c3d781e93def6e126d144af29ee0754083cb27b9..03d480e7b0dfdc3e7b4330be4fc37b9675b5f22e 100644
--- a/third_party/WebKit/WebCore/bindings/v8/custom/V8DOMWindowCustom.cpp
+++ b/third_party/WebKit/WebCore/bindings/v8/custom/V8DOMWindowCustom.cpp
@@ -242,6 +242,26 @@ ACCESSOR_RUNTIME_ENABLER(DOMWindowAudio)
     return MediaPlayer::isAvailable();
 }
 
+ACCESSOR_RUNTIME_ENABLER(DOMWindowHTMLMediaElement)
+{
+    return MediaPlayer::isAvailable();
+}
+
+ACCESSOR_RUNTIME_ENABLER(DOMWindowHTMLAudioElement)
+{
+    return MediaPlayer::isAvailable();
+}
+
+ACCESSOR_RUNTIME_ENABLER(DOMWindowHTMLVideoElement)
+{
+    return MediaPlayer::isAvailable();
+}
+
+ACCESSOR_RUNTIME_ENABLER(DOMWindowMediaError)
+{
+    return MediaPlayer::isAvailable();
+}
+
 #endif
 
 #if ENABLE(SHARED_WORKERS)