[MediaSession, Android] Adding visibility tests for MediaSession

content/browser/media/session/media_session_visibility_browsertest_instances.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 "base/command_line.h"
+#include "content/browser/media/session/media_session_visibility_browsertest_base.h"
+#include "media/base/media_switches.h"
+
+using content::MediaSessionVisibilityBrowserTestBase;
+
+// UnifiedPipeline + SuspendOnHide
+class MediaSessionVisibilityBrowserTest_UnifiedPipeline_SuspendOnHide :
+      public MediaSessionVisibilityBrowserTestBase {
+  void SetUpCommandLine(base::CommandLine* command_line) override {
+    MediaSessionVisibilityBrowserTestBase::SetUpCommandLine(command_line);
+#if defined(OS_ANDROID)
+    command_line->AppendSwitch(switches::kEnableUnifiedMediaPipeline);
+#else  // defined(OS_ANDROID)
+    command_line->AppendSwitch(switches::kEnableMediaSuspend);
+#endif  // defined(OS_ANDROID)
+  }
+};
+
+INCLUDE_TEST_FROM_BASE_CLASS(
+    MediaSessionVisibilityBrowserTest_UnifiedPipeline_SuspendOnHide,
+    TestSessionInactiveWhenHiddenAfterContentPause)
+INCLUDE_TEST_FROM_BASE_CLASS(
+    MediaSessionVisibilityBrowserTest_UnifiedPipeline_SuspendOnHide,
+    TestSessionInactiveWhenHiddenWhilePlaying)
+
+// UnifiedPipeline + NosuspendOnHide
+class MediaSessionVisibilityBrowserTest_UnifiedPipeline_NosuspendOnHide :
+      public MediaSessionVisibilityBrowserTestBase {
+  void SetUpCommandLine(base::CommandLine* command_line) override {
+    MediaSessionVisibilityBrowserTestBase::SetUpCommandLine(command_line);
+#if defined(OS_ANDROID)
+    command_line->AppendSwitch(switches::kEnableUnifiedMediaPipeline);
+    command_line->AppendSwitch(switches::kDisableMediaSuspend);
+#endif  // defined(OS_ANDROID)
+  }
+};
+
+INCLUDE_TEST_FROM_BASE_CLASS(
+    MediaSessionVisibilityBrowserTest_UnifiedPipeline_NosuspendOnHide,
+    TestSessionSuspendedWhenHiddenAfterContentPause)
+INCLUDE_TEST_FROM_BASE_CLASS(
+    MediaSessionVisibilityBrowserTest_UnifiedPipeline_NosuspendOnHide,
+    TestSessionActiveWhenHiddenWhilePlaying)
+
+#if defined(OS_ANDROID)
+// AndroidPipeline + SuspendOnHide
+class MediaSessionVisibilityBrowserTest_AndroidPipeline_SuspendOnHide :
+      public MediaSessionVisibilityBrowserTestBase {

[mlamouri (slow - plz ping), 2016/03/31 10:27:53]

I think you might need to use a kDisableUnifiedMediaPipeline when unified media
pipeline will be enabled by default, see https://crbug.com/597014. Maybe add a
TODO?

[Zhiqiang Zhang (Slow), 2016/03/31 13:00:19]

Done.

+};
+
+INCLUDE_TEST_FROM_BASE_CLASS(
+    MediaSessionVisibilityBrowserTest_AndroidPipeline_SuspendOnHide,
+    TestSessionInactiveWhenHiddenAfterContentPause)
+INCLUDE_TEST_FROM_BASE_CLASS(
+    MediaSessionVisibilityBrowserTest_AndroidPipeline_SuspendOnHide,
+    TestSessionInactiveWhenHiddenWhilePlaying)
+
+// AndroidPipeline + NosuspendOnHide
+class MediaSessionVisibilityBrowserTest_AndroidPipeline_NosuspendOnHide :
+      public MediaSessionVisibilityBrowserTestBase {
+  void SetUpCommandLine(base::CommandLine* command_line) override {
+    MediaSessionVisibilityBrowserTestBase::SetUpCommandLine(command_line);
+    command_line->AppendSwitch(switches::kDisableMediaSuspend);
+  }
+};
+
+INCLUDE_TEST_FROM_BASE_CLASS(
+    MediaSessionVisibilityBrowserTest_AndroidPipeline_NosuspendOnHide,
+    TestSessionSuspendedWhenHiddenAfterContentPause)
+INCLUDE_TEST_FROM_BASE_CLASS(
+    MediaSessionVisibilityBrowserTest_AndroidPipeline_NosuspendOnHide,
+    TestSessionActiveWhenHiddenWhilePlaying)
+
+#endif  // defined(OS_ANDROID)