[MediaSession, Android] Adding visibility tests for MediaSession

content/browser/media/session/media_session_integration_browsertest_base.h

+// 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.
+
+#ifndef CONTENT_BROWSER_MEDIA_SESSION_MEDIA_SESSION_INTEGRATION_BROWSER_TEST_BASE_H_
+#define CONTENT_BROWSER_MEDIA_SESSION_MEDIA_SESSION_INTEGRATION_BROWSER_TEST_BASE_H_
+
+#include "content/public/test/content_browser_test.h"
+namespace base {

[mlamouri (slow - plz ping), 2016/03/23 15:10:16]

style: I believe you are missing a line between the #include and the namespace
declaration.

[Zhiqiang Zhang (Slow), 2016/03/24 18:16:49]

Done.

+class CommandLine;
+class TimeDelta;
+}
+
+namespace content {
+
+class WebContents;
+class MediaSession;
+
+class MediaSessionIntegrationBrowserTestBase

[mlamouri (slow - plz ping), 2016/03/23 15:10:16]

nit: I would call this MediaSessionVisibilityBrowserTestBase

[Zhiqiang Zhang (Slow), 2016/03/24 18:16:49]

Done.

+    : public ContentBrowserTest {
+ public:
+  MediaSessionIntegrationBrowserTestBase() = default;
+
+  void SetUpOnMainThread() override;
+
+  void SetUpCommandLine(base::CommandLine* command_line) override;
+
+  void LoadTestPage();
+
+  void RunScript(std::string script);
+
+  // TODO(zqzhang): This method is shared with
+  // MediaIntegrationTests. Move it into a general place.
+  bool ConditionalWait(base::TimeDelta timeout,
+                       base::TimeDelta interval,
+                       const base::Callback<bool(void)>& callback);
+
+  bool IsMediaSessionActive();
+  bool IsMediaSessionSuspended();
+  bool IsMediaSessionInactive();
+
+ protected:
+  void TestSessionInactiveWhenHiddenAfterContentPause();
+  void TestSessionInactiveWhenHiddenWhilePlaying();
+
+  WebContents* web_contents_;
+  MediaSession* media_session_;
+};
+
+}  // namespace content
+
+#define INCLUDE_TEST_FROM_BASE_CLASS(test_fixture, test_name)     \
+  IN_PROC_BROWSER_TEST_F(test_fixture, test_name) {\
+    test_name();\
+  }
+
+#endif  // CONTENT_BROWSER_MEDIA_SESSION_MEDIA_SESSION_INTEGRATION_BROWSER_TEST_BASE_H_