Allow IO thread usage in WebRTC browsertests

chrome/browser/media/webrtc/webrtc_stats_perf_browsertest.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 <string>
 
 #include "base/command_line.h"
 #include "base/test/test_timeouts.h"
+#include "base/threading/thread_restrictions.h"
 #include "base/time/time.h"
 #include "chrome/browser/media/webrtc/test_stats_dictionary.h"
 #include "chrome/browser/media/webrtc/webrtc_browsertest_base.h"
 #include "chrome/browser/media/webrtc/webrtc_browsertest_common.h"
 #include "content/public/common/content_switches.h"
 #include "content/public/common/feature_h264_with_openh264_ffmpeg.h"
 #include "media/base/media_switches.h"
 #include "testing/perf/perf_test.h"
 
 namespace content {
@@ skipping 206 matching lines @@
   }
 
  private:
   content::WebContents* left_tab_ = nullptr;
   content::WebContents* right_tab_ = nullptr;
 };
 
 IN_PROC_BROWSER_TEST_F(
     WebRtcStatsPerfBrowserTest,
     MANUAL_RunsAudioAndVideoCallCollectingMetrics_AudioCodec_opus) {
+  base::ThreadRestrictions::ScopedAllowIO allow_io;
   RunsAudioAndVideoCallCollectingMetrics("opus", kUseDefaultVideoCodec);
 }
 
 IN_PROC_BROWSER_TEST_F(
     WebRtcStatsPerfBrowserTest,
     MANUAL_RunsAudioAndVideoCallCollectingMetrics_AudioCodec_ISAC) {
+  base::ThreadRestrictions::ScopedAllowIO allow_io;
   RunsAudioAndVideoCallCollectingMetrics("ISAC", kUseDefaultVideoCodec);
 }
 
 IN_PROC_BROWSER_TEST_F(
     WebRtcStatsPerfBrowserTest,
     MANUAL_RunsAudioAndVideoCallCollectingMetrics_AudioCodec_G722) {
+  base::ThreadRestrictions::ScopedAllowIO allow_io;
   RunsAudioAndVideoCallCollectingMetrics("G722", kUseDefaultVideoCodec);
 }
 
 IN_PROC_BROWSER_TEST_F(
     WebRtcStatsPerfBrowserTest,
     MANUAL_RunsAudioAndVideoCallCollectingMetrics_AudioCodec_PCMU) {
+  base::ThreadRestrictions::ScopedAllowIO allow_io;
   RunsAudioAndVideoCallCollectingMetrics("PCMU", kUseDefaultVideoCodec);
 }
 
 IN_PROC_BROWSER_TEST_F(
     WebRtcStatsPerfBrowserTest,
     MANUAL_RunsAudioAndVideoCallCollectingMetrics_AudioCodec_PCMA) {
+  base::ThreadRestrictions::ScopedAllowIO allow_io;
   RunsAudioAndVideoCallCollectingMetrics("PCMA", kUseDefaultVideoCodec);
 }
 
 IN_PROC_BROWSER_TEST_F(
     WebRtcStatsPerfBrowserTest,
     MANUAL_RunsAudioAndVideoCallCollectingMetrics_VideoCodec_VP8) {
+  base::ThreadRestrictions::ScopedAllowIO allow_io;
   RunsAudioAndVideoCallCollectingMetrics(kUseDefaultAudioCodec, "VP8");
 }
 
 IN_PROC_BROWSER_TEST_F(
     WebRtcStatsPerfBrowserTest,
     MANUAL_RunsAudioAndVideoCallCollectingMetrics_VideoCodec_VP9) {
+  base::ThreadRestrictions::ScopedAllowIO allow_io;
   RunsAudioAndVideoCallCollectingMetrics(kUseDefaultAudioCodec, "VP9");
 }
 
 #if BUILDFLAG(RTC_USE_H264)
 
 IN_PROC_BROWSER_TEST_F(
     WebRtcStatsPerfBrowserTest,
     MANUAL_RunsAudioAndVideoCallCollectingMetrics_VideoCodec_H264) {
+  base::ThreadRestrictions::ScopedAllowIO allow_io;
   // Only run test if run-time feature corresponding to |rtc_use_h264| is on.
   if (!base::FeatureList::IsEnabled(content::kWebRtcH264WithOpenH264FFmpeg)) {
     LOG(WARNING) << "Run-time feature WebRTC-H264WithOpenH264FFmpeg disabled. "
         "Skipping WebRtcPerfBrowserTest."
         "MANUAL_RunsAudioAndVideoCallCollectingMetrics_VideoCodec_H264 (test "
         "\"OK\")";
     return;
   }
   RunsAudioAndVideoCallCollectingMetrics(kUseDefaultAudioCodec, "H264");
 }
 
 #endif  // BUILDFLAG(RTC_USE_H264)
 
 IN_PROC_BROWSER_TEST_F(
     WebRtcStatsPerfBrowserTest,
     MANUAL_RunsAudioAndVideoCallMeasuringGetStatsPerformance_Promise) {
+  base::ThreadRestrictions::ScopedAllowIO allow_io;
   RunsAudioAndVideoCallMeasuringGetStatsPerformance(
       GetStatsVariation::PROMISE_BASED);
 }
 
 IN_PROC_BROWSER_TEST_F(
     WebRtcStatsPerfBrowserTest,
     MANUAL_RunsAudioAndVideoCallMeasuringGetStatsPerformance_Callback) {
+  base::ThreadRestrictions::ScopedAllowIO allow_io;
   RunsAudioAndVideoCallMeasuringGetStatsPerformance(
       GetStatsVariation::CALLBACK_BASED);
 }
 
 }  // namespace
 
 }  // namespace content