Separates the WebRTC browser tests that deal with audio detection.

content/browser/media/webrtc/webrtc_browsertest_audio.cc

+// Copyright (c) 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 "base/files/file_util.h"
+#include "base/threading/platform_thread.h"
+#include "build/build_config.h"
+#include "content/browser/web_contents/web_contents_impl.h"
+#include "content/public/common/content_switches.h"
+#include "content/public/common/webrtc_ip_handling_policy.h"
+#include "content/public/test/browser_test_utils.h"
+#include "content/public/test/content_browser_test_utils.h"
+#include "content/public/test/test_utils.h"
+#include "content/test/webrtc_content_browsertest_base.h"
+#include "media/audio/audio_manager.h"
+#include "media/base/media_switches.h"
+#include "net/test/embedded_test_server/embedded_test_server.h"
+
+namespace content {
+
+#if defined(OS_ANDROID) && defined(ADDRESS_SANITIZER)
+// Renderer crashes under Android ASAN: https://crbug.com/408496.
+#define MAYBE_WebRtcBrowserAudioTest DISABLED_WebRtcBrowserAudioTest
+#else
+#define MAYBE_WebRtcBrowserAudioTest WebRtcBrowserAudioTest
+#endif
+
+// This class tests the scenario when permission to access mic or camera is
+// granted.
+class MAYBE_WebRtcBrowserAudioTest : public WebRtcContentBrowserTest {
+ public:
+  MAYBE_WebRtcBrowserAudioTest() {}
+  ~MAYBE_WebRtcBrowserAudioTest() override {}
+
+  void SetUpCommandLine(base::CommandLine* command_line) override {
+    WebRtcContentBrowserTest::SetUpCommandLine(command_line);
+    // Automatically grant device permission.
+    AppendUseFakeUIForMediaStreamFlag();
+  }
+
+ protected:
+  // Convenience method for making calls that detect if audio os playing (which
+  // has some special prerequisites, such that there needs to be an audio output
+  // device on the executing machine).
+  void MakeAudioDetectingPeerConnectionCall(const std::string& javascript) {
+    if (!media::AudioManager::Get()->HasAudioOutputDevices()) {
+      // Bots with no output devices will force the audio code into a state
+      // where it doesn't manage to set either the low or high latency path.
+      // This test will compute useless values in that case, so skip running on
+      // such bots (see crbug.com/326338).
+      LOG(INFO) << "Missing output devices: skipping test...";
+      return;
+    }
+
+    ASSERT_TRUE(base::CommandLine::ForCurrentProcess()->HasSwitch(
+        switches::kUseFakeDeviceForMediaStream))
+            << "Must run with fake devices since the test will explicitly look "
+            << "for the fake device signal.";
+
+    MakeTypicalCall(javascript, "/media/peerconnection-call-audio.html");
+  }
+};
+
+// Causes asserts in libjingle: http://crbug.com/484826.
+IN_PROC_BROWSER_TEST_F(MAYBE_WebRtcBrowserAudioTest,
+                       CanMakeVideoCallAndThenRenegotiateToAudio) {

[phoglund_chromium, 2016/07/22 08:53:28]

So this test worked? In that case you should remove the comment above and close
the associated bug. Either way, don't do that in this CL, make a separate CL.

[ehmaldonado_chromium, 2016/07/22 08:59:11]

Yes it worked.
Done.

+  MakeAudioDetectingPeerConnectionCall(
+      "callAndRenegotiateToAudio({audio: true, video:true}, {audio: true});");
+}
+
+IN_PROC_BROWSER_TEST_F(MAYBE_WebRtcBrowserAudioTest,
+                       EstablishAudioVideoCallAndEnsureAudioIsPlaying) {
+  MakeAudioDetectingPeerConnectionCall(
+      "callAndEnsureAudioIsPlaying({audio:true, video:true});");
+}
+
+IN_PROC_BROWSER_TEST_F(MAYBE_WebRtcBrowserAudioTest,
+                       EstablishAudioOnlyCallAndEnsureAudioIsPlaying) {
+  MakeAudioDetectingPeerConnectionCall(
+      "callAndEnsureAudioIsPlaying({audio:true});");
+}
+
+IN_PROC_BROWSER_TEST_F(MAYBE_WebRtcBrowserAudioTest,
+                       EstablishIsac16KCallAndEnsureAudioIsPlaying) {
+  MakeAudioDetectingPeerConnectionCall(
+      "callWithIsac16KAndEnsureAudioIsPlaying({audio:true});");
+}
+
+IN_PROC_BROWSER_TEST_F(MAYBE_WebRtcBrowserAudioTest,
+                       EstablishAudioVideoCallAndVerifyRemoteMutingWorks) {
+  MakeAudioDetectingPeerConnectionCall(
+      "callAndEnsureRemoteAudioTrackMutingWorks();");
+}
+
+IN_PROC_BROWSER_TEST_F(MAYBE_WebRtcBrowserAudioTest,
+                       EstablishAudioVideoCallAndVerifyLocalMutingWorks) {
+  MakeAudioDetectingPeerConnectionCall(
+      "callAndEnsureLocalAudioTrackMutingWorks();");
+}
+
+IN_PROC_BROWSER_TEST_F(MAYBE_WebRtcBrowserAudioTest,
+                       EnsureLocalVideoMuteDoesntMuteAudio) {
+  MakeAudioDetectingPeerConnectionCall(
+      "callAndEnsureLocalVideoMutingDoesntMuteAudio();");
+}
+
+IN_PROC_BROWSER_TEST_F(MAYBE_WebRtcBrowserAudioTest,
+                       EnsureRemoteVideoMuteDoesntMuteAudio) {
+  MakeAudioDetectingPeerConnectionCall(
+      "callAndEnsureRemoteVideoMutingDoesntMuteAudio();");
+}
+
+IN_PROC_BROWSER_TEST_F(MAYBE_WebRtcBrowserAudioTest,
+                       EstablishAudioVideoCallAndVerifyUnmutingWorks) {
+  MakeAudioDetectingPeerConnectionCall(
+      "callAndEnsureAudioTrackUnmutingWorks();");
+}
+
+}  // namespace content