Have HTMLMediaElement::play() return a Promise.

third_party/WebKit/Source/core/html/HTMLVideoElementTest.cpp

 // Copyright 2015 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 "core/html/HTMLVideoElement.h"
 
 #include "core/dom/Document.h"
 #include "core/loader/EmptyClients.h"
 #include "core/page/NetworkStateNotifier.h"
 #include "core/testing/DummyPageHolder.h"
@@ skipping 86 matching lines @@
 };
 
 TEST_F(HTMLVideoElementTest, setBufferingStrategy_NonUserPause)
 {
     setSrc("http://foo.bar/");
     MockWebMediaPlayer* player = webMediaPlayer();
     ASSERT_TRUE(player);
 
     // On play, the strategy is set to normal.
     EXPECT_CALL(*player, setBufferingStrategy(WebMediaPlayer::BufferingStrategy::Normal));
-    m_video->play();
+    m_video->playInternal();
     ::testing::Mock::VerifyAndClearExpectations(player);
 
     // On a non-user pause, the strategy is not changed.
     m_video->pause();
     ::testing::Mock::VerifyAndClearExpectations(player);
 
     // On play, the strategy is set to normal.
     EXPECT_CALL(*player, setBufferingStrategy(WebMediaPlayer::BufferingStrategy::Normal));
-    m_video->play();
+    m_video->playInternal();
     ::testing::Mock::VerifyAndClearExpectations(player);
 }
 
 TEST_F(HTMLVideoElementTest, setBufferingStrategy_UserPause)
 {
     setSrc("http://foo.bar/");
     MockWebMediaPlayer* player = webMediaPlayer();
     ASSERT_TRUE(player);
 
     // On play, the strategy is set to normal.
     EXPECT_CALL(*player, setBufferingStrategy(WebMediaPlayer::BufferingStrategy::Normal));
-    m_video->play();
+    m_video->playInternal();
     ::testing::Mock::VerifyAndClearExpectations(player);
 
     // On a user pause, the strategy is set to aggressive.
     EXPECT_CALL(*player, setBufferingStrategy(WebMediaPlayer::BufferingStrategy::Aggressive));
     {
         UserGestureIndicator gesture(DefinitelyProcessingUserGesture);
         m_video->pause();
     }
     ::testing::Mock::VerifyAndClearExpectations(player);
 
     // On play, the strategy is set to normal.
     EXPECT_CALL(*player, setBufferingStrategy(WebMediaPlayer::BufferingStrategy::Normal));
-    m_video->play();
+    m_video->playInternal();
     ::testing::Mock::VerifyAndClearExpectations(player);
 }
 
 } // namespace blink