bug 1088758 - Add the ability to mirror tabs from desktop to a second screen, restrict privledged GuM based on calling compartment rather than passed window's document r=rjesup

dom/media/MediaManager.cpp

@@ -1580,7 +1580,7 @@ MediaManager::GetUserMedia(
   NS_ENSURE_TRUE(aOnFailure, NS_ERROR_NULL_POINTER);
   NS_ENSURE_TRUE(aOnSuccess, NS_ERROR_NULL_POINTER);
 
-  bool privileged = nsContentUtils::IsChromeDoc(aWindow->GetExtantDoc());
+  bool privileged = nsContentUtils::IsCallerChrome();
 
   nsCOMPtr<nsIDOMGetUserMediaSuccessCallback> onSuccess(aOnSuccess);
   nsCOMPtr<nsIDOMGetUserMediaErrorCallback> onFailure(aOnFailure);

dom/media/webspeech/recognition/SpeechRecognition.cpp

@@ -713,6 +713,7 @@ SpeechRecognition::Start(const Optional<NonNull<DOMMediaStream>>& aStream, Error
   if (aStream.WasPassed()) {
     StartRecording(&aStream.Value());
   } else {
+    AutoNoJSAPI();
     MediaManager* manager = MediaManager::Get();
     manager->GetUserMedia(GetOwner(),
                           constraints,