cros: Suspend media sessions with display off trigger by tablet power button

content/browser/media/session/media_session_browsertest.cc

 // Copyright 2017 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 "content/public/browser/media_session.h"
 
 #include "base/command_line.h"
 #include "base/run_loop.h"
 #include "base/strings/utf_string_conversions.h"
 #include "content/public/browser/render_frame_host.h"
@@ skipping 93 matching lines @@
     Type type_;
 
     DISALLOW_COPY_AND_ASSIGN(MediaStartStopObserver);
   };
 
   DISALLOW_COPY_AND_ASSIGN(MediaSessionBrowserTest);
 };
 
 }  // anonymous namespace
 
-#if !defined(OS_ANDROID)
-// The feature can't be disabled on Android.
+#if !defined(OS_ANDROID) && !defined(OS_CHROMEOS)
+// The feature can't be disabled on Android and Chrome OS.
 IN_PROC_BROWSER_TEST_F(MediaSessionBrowserTest, MediaSessionNoOpWhenDisabled) {
   NavigateToURL(shell(), GetTestUrl("media/session", "media-session.html"));
 
   MediaSession* media_session = MediaSession::Get(shell()->web_contents());
   ASSERT_NE(nullptr, media_session);
 
   StartPlaybackAndWait(shell(), "long-video");
   StartPlaybackAndWait(shell(), "long-audio");
 
   media_session->Suspend(MediaSession::SuspendType::SYSTEM);
   StopPlaybackAndWait(shell(), "long-audio");
 
   // At that point, only "long-audio" is paused.
   EXPECT_FALSE(IsPlaying(shell(), "long-audio"));
   EXPECT_TRUE(IsPlaying(shell(), "long-video"));
 }
-#endif  // !defined(OS_ANDROID)
+#endif  // !defined(OS_ANDROID) && !defined(OS_CHROMEOS)
 
 IN_PROC_BROWSER_TEST_F(MediaSessionBrowserTest, SimplePlayPause) {
   EnableInternalMediaSesion();
 
   NavigateToURL(shell(), GetTestUrl("media/session", "media-session.html"));
 
   MediaSession* media_session = MediaSession::Get(shell()->web_contents());
   ASSERT_NE(nullptr, media_session);
 
   StartPlaybackAndWait(shell(), "long-video");
@@ skipping 64 matching lines @@
   EXPECT_FALSE(IsPlaying(other_shell, "long-video"));
 
   other_media_session->Resume(MediaSession::SuspendType::SYSTEM);
   WaitForStart(other_shell);
   EXPECT_TRUE(IsPlaying(shell(), "long-video"));
   EXPECT_TRUE(IsPlaying(other_shell, "long-video"));
 }
 #endif  // defined(OS_ANDROID)
 
 }  // namespace content