[Blink, RemotePlayback] Dismissing the dialog rejects with NotAllowedError.

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 cc287ed5294870c2b4a12bbf1a7aa4a7027586c5..acd831d70c142fb27accac3623dde17cc0fa1e6d 100644
--- a/third_party/WebKit/Source/modules/remoteplayback/RemotePlayback.h
+++ b/third_party/WebKit/Source/modules/remoteplayback/RemotePlayback.h
@@ -8,6 +8,7 @@
 #include "bindings/core/v8/ActiveScriptWrappable.h"
 #include "bindings/core/v8/ScriptPromise.h"
 #include "core/events/EventTarget.h"
+#include "modules/ModulesExport.h"
 #include "platform/heap/Handle.h"
 #include "public/platform/modules/remoteplayback/WebRemotePlaybackClient.h"
 #include "public/platform/modules/remoteplayback/WebRemotePlaybackState.h"
@@ -22,9 +23,9 @@ class LocalFrame;
 class RemotePlaybackAvailability;
 class ScriptPromiseResolver;
 
-class RemotePlayback final : public EventTargetWithInlineData,
-                             public ActiveScriptWrappable,
-                             private WebRemotePlaybackClient {
+class MODULES_EXPORT RemotePlayback final : public EventTargetWithInlineData,
+                                            public ActiveScriptWrappable,
+                                            private WebRemotePlaybackClient {

[mlamouri (slow - plz ping), 2016/10/06 10:55:08]

should you do `NON_EXPORTED_BASE(WebRemotePlaybackClient)` to solve the Windows
build?

[whywhat, 2016/10/06 18:18:48]

I should probably :P

   DEFINE_WRAPPERTYPEINFO();
   USING_GARBAGE_COLLECTED_MIXIN(RemotePlayback);
 
@@ -48,6 +49,8 @@ class RemotePlayback final : public EventTargetWithInlineData,
   DECLARE_VIRTUAL_TRACE();
 
  private:
+  friend class RemotePlaybackTest;
+
   explicit RemotePlayback(HTMLMediaElement&);
 
   // WebRemotePlaybackClient implementation.