Presentation API: reject screen availability observing on Android low ram devices.

chrome/browser/media/android/router/media_router_android.cc

Index: chrome/browser/media/android/router/media_router_android.cc
diff --git a/chrome/browser/media/android/router/media_router_android.cc b/chrome/browser/media/android/router/media_router_android.cc
index 758d6251f16824bc1e50bdaf69eead384f5daecf..dd7a52721e3a663769d52a43cdcf974fa2c27593 100644
--- a/chrome/browser/media/android/router/media_router_android.cc
+++ b/chrome/browser/media/android/router/media_router_android.cc
@@ -188,7 +188,7 @@ void MediaRouterAndroid::OnPresentationSessionDetached(
   CloseRoute(route_id);
 }
 
-void MediaRouterAndroid::RegisterMediaSinksObserver(
+bool MediaRouterAndroid::RegisterMediaSinksObserver(
     MediaSinksObserver* observer) {
   const std::string& source_id = observer->source().id();
   base::ObserverList<MediaSinksObserver>* observer_list =
@@ -204,7 +204,7 @@ void MediaRouterAndroid::RegisterMediaSinksObserver(
   JNIEnv* env = base::android::AttachCurrentThread();
   ScopedJavaLocalRef<jstring> jsource_id =
       base::android::ConvertUTF8ToJavaString(env, source_id);
-  Java_ChromeMediaRouter_startObservingMediaSinks(
+  return Java_ChromeMediaRouter_startObservingMediaSinks(
       env, java_media_router_.obj(), jsource_id.obj());
 }