Remove MediaControls methods needed for the Cast button

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 4b328004ab74680e393cdf0dbacfdb852607dd2a..d2086b1c9d57a860033c0613938f536e86bb5429 100644
--- a/third_party/WebKit/Source/modules/remoteplayback/RemotePlayback.h
+++ b/third_party/WebKit/Source/modules/remoteplayback/RemotePlayback.h
@@ -7,12 +7,12 @@
 
 #include "bindings/core/v8/ActiveScriptWrappable.h"
 #include "bindings/core/v8/ScriptPromise.h"
-#include "bindings/core/v8/TraceWrapperMember.h"
 #include "core/dom/ExecutionContext.h"
 #include "core/events/EventTarget.h"
 #include "modules/ModulesExport.h"
 #include "platform/heap/Handle.h"
 #include "platform/wtf/Compiler.h"
+#include "platform/wtf/Functional.h"
 #include "platform/wtf/text/AtomicString.h"
 #include "platform/wtf/text/WTFString.h"
 #include "public/platform/modules/remoteplayback/WebRemotePlaybackAvailability.h"
@@ -71,14 +71,21 @@ class MODULES_EXPORT RemotePlayback final
   DEFINE_ATTRIBUTE_EVENT_LISTENER(disconnect);
 
   DECLARE_VIRTUAL_TRACE();
-  DECLARE_VIRTUAL_TRACE_WRAPPERS();
 
  private:
+  friend class MediaControlCastButtonElement;
   friend class V8RemotePlayback;
   friend class RemotePlaybackTest;
 
   explicit RemotePlayback(HTMLMediaElement&);
 
+  // The implementation of prompt(). Used by the native remote playback button.
+  void PromptInternal();
+
+  // The implementation of watchAvailability() and cancelWatchAvailability().
+  int WatchAvailabilityInternal(std::unique_ptr<WTF::Closure> callback);
+  bool CancelWatchAvailabilityInternal(int id);
+
   // Calls the specified availability callback with the current availability.
   // Need a void() method to post it as a task.
   void NotifyInitialAvailability(int callback_id);
@@ -91,8 +98,7 @@ class MODULES_EXPORT RemotePlayback final
 
   WebRemotePlaybackState state_;
   WebRemotePlaybackAvailability availability_;
-  HeapHashMap<int, TraceWrapperMember<RemotePlaybackAvailabilityCallback>>
-      availability_callbacks_;
+  HeapHashMap<int, Member<AvailabilityCallback>> availability_callbacks_;
   Member<HTMLMediaElement> media_element_;
   Member<ScriptPromiseResolver> prompt_promise_resolver_;
 };