Expose media controls to accessibility

chromecast/browser/cast_media_blocker_unittest.cc

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chromecast/browser/cast_media_blocker.h"
 
 #include <memory>
 
 #include "base/memory/ptr_util.h"
 #include "content/public/browser/media_session.h"
@@ skipping 20 matching lines @@
         .WillByDefault(Invoke(session, &MediaSession::Suspend));
     ON_CALL(*this, Stop(_)).WillByDefault(Invoke(session, &MediaSession::Stop));
     ON_CALL(*this, DidReceiveAction(_))
         .WillByDefault(Invoke(session, &MediaSession::DidReceiveAction));
   }
   ~MockMediaSession() {}
 
   MOCK_METHOD1(Resume, void(content::MediaSession::SuspendType));
   MOCK_METHOD1(Suspend, void(content::MediaSession::SuspendType));
   MOCK_METHOD1(Stop, void(content::MediaSession::SuspendType));
+  MOCK_METHOD0(StartDucking, void());
+  MOCK_METHOD0(StopDucking, void());
   MOCK_METHOD1(DidReceiveAction, void(blink::mojom::MediaSessionAction));
 
  private:
   DISALLOW_COPY_AND_ASSIGN(MockMediaSession);
 };
 
 class CastMediaBlockerTest : public content::RenderViewHostTestHarness {
  public:
   CastMediaBlockerTest() {}
   ~CastMediaBlockerTest() override {}
@@ skipping 220 matching lines @@
   // Tests CastMediaBlocker does not resume if unblocked and media is playing.
   EXPECT_CALL(*media_session_, Suspend(_)).Times(1);
   EXPECT_CALL(*media_session_, Resume(_)).Times(0);
   MediaSessionChanged(true, false);
   media_blocker_->BlockMediaLoading(true);
   media_blocker_->BlockMediaLoading(false);
 }
 
 }  // namespace shell
 }  // namespace chromecast