[v8] Check for availablity of the media engine

third_party/WebKit/WebCore/page/DOMWindow.idl

Index: third_party/WebKit/WebCore/page/DOMWindow.idl
diff --git a/third_party/WebKit/WebCore/page/DOMWindow.idl b/third_party/WebKit/WebCore/page/DOMWindow.idl
index 903ed182f1a895a27fb34d17f79a856072700bf3..7eeb5f5a1592f0a9887f572631d7066c64aba6a7 100644
--- a/third_party/WebKit/WebCore/page/DOMWindow.idl
+++ b/third_party/WebKit/WebCore/page/DOMWindow.idl
@@ -524,10 +524,10 @@ module window {
 #endif
 
         attribute [CustomGetter,Conditional=VIDEO,EnabledAtRuntime] HTMLAudioElementConstructor Audio; // Usable with the new operator
-        attribute [Conditional=VIDEO] HTMLAudioElementConstructor HTMLAudioElement;
-        attribute [Conditional=VIDEO] HTMLMediaElementConstructor HTMLMediaElement;
-        attribute [Conditional=VIDEO] HTMLVideoElementConstructor HTMLVideoElement;
-        attribute [Conditional=VIDEO] MediaErrorConstructor MediaError;
+        attribute [Conditional=VIDEO,EnabledAtRuntime] HTMLAudioElementConstructor HTMLAudioElement;
+        attribute [Conditional=VIDEO,EnabledAtRuntime] HTMLMediaElementConstructor HTMLMediaElement;
+        attribute [Conditional=VIDEO,EnabledAtRuntime] HTMLVideoElementConstructor HTMLVideoElement;
+        attribute [Conditional=VIDEO,EnabledAtRuntime] MediaErrorConstructor MediaError;
 
 #if defined(ENABLE_XPATH) && ENABLE_XPATH
         attribute XPathEvaluatorConstructor XPathEvaluator;