[RemotePlayback] Keep track of source compatibility and reject prompt() correspondingly

third_party/WebKit/Source/modules/remoteplayback/RemotePlayback.h

Index: third_party/WebKit/Source/modules/remoteplayback/RemotePlayback.h
diff --git a/third_party/WebKit/Source/modules/remoteplayback/RemotePlayback.h b/third_party/WebKit/Source/modules/remoteplayback/RemotePlayback.h
index d12c4da7cc8a72785eb432d9974f7fbc42e08f83..9022bbd162775a7ff5a340f69d0857aed5e0cacf 100644
--- a/third_party/WebKit/Source/modules/remoteplayback/RemotePlayback.h
+++ b/third_party/WebKit/Source/modules/remoteplayback/RemotePlayback.h
@@ -28,7 +28,7 @@ class ScriptPromiseResolver;
 class MODULES_EXPORT RemotePlayback final
     : public EventTargetWithInlineData,
       public ActiveScriptWrappable,
-      WTF_NON_EXPORTED_BASE(private WebRemotePlaybackClient) {
+      WTF_NON_EXPORTED_BASE(public WebRemotePlaybackClient) {
   DEFINE_WRAPPERTYPEINFO();
   USING_GARBAGE_COLLECTED_MIXIN(RemotePlayback);
 
@@ -83,8 +83,10 @@ class MODULES_EXPORT RemotePlayback final
 
   // WebRemotePlaybackClient implementation.
   void stateChanged(WebRemotePlaybackState) override;
-  void availabilityChanged(bool available) override;
+  void availabilityChanged(bool isRouteAvailable,
+                           bool isSourceCompatible) override;
   void promptCancelled() override;
+  bool remotePlaybackAvailable() const override;
 
   // Prevent v8 from garbage collecting the availability callbacks.
   // TODO(avayvod): remove when crbug.com/468240 is fixed and the references
@@ -94,7 +96,8 @@ class MODULES_EXPORT RemotePlayback final
 
   RefPtr<ScriptState> m_scriptState;
   WebRemotePlaybackState m_state;
-  bool m_availability;
+  bool m_routeAvailable;
+  bool m_sourceCompatible;
   HeapHashMap<int, TraceWrapperMember<RemotePlaybackAvailabilityCallback>>
       m_availabilityCallbacks;
   Member<HTMLMediaElement> m_mediaElement;