Allow IO thread usage in WebRTC browsertests

chrome/browser/media/webrtc/webrtc_internals_perf_browsertest.cc

 // Copyright 2014 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 <memory>
 
 #include "base/command_line.h"
 #include "base/files/file_util.h"
 #include "base/json/json_reader.h"
 #include "base/macros.h"
 #include "base/strings/string_split.h"
 #include "base/test/test_timeouts.h"
+#include "base/threading/thread_restrictions.h"
 #include "base/time/time.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/media/webrtc/webrtc_browsertest_base.h"
 #include "chrome/browser/media/webrtc/webrtc_browsertest_common.h"
 #include "chrome/browser/media/webrtc/webrtc_browsertest_perf.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_tabstrip.h"
 #include "chrome/browser/ui/tabs/tab_strip_model.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/test/base/in_process_browser_test.h"
@@ skipping 196 matching lines @@
     HangUp(left_tab);
     HangUp(right_tab);
   }
 };
 
 // This is manual for its long execution time.
 
 IN_PROC_BROWSER_TEST_F(
     WebRtcInternalsPerfBrowserTest,
     MANUAL_RunsAudioVideoCall60SecsAndLogsInternalMetricsVp8) {
+  base::ThreadRestrictions::ScopedAllowIO allow_io;
   RunsAudioVideoCall60SecsAndLogsInternalMetrics("VP8");
 }
 
 IN_PROC_BROWSER_TEST_F(
     WebRtcInternalsPerfBrowserTest,
     MANUAL_RunsAudioVideoCall60SecsAndLogsInternalMetricsVp9) {
+  base::ThreadRestrictions::ScopedAllowIO allow_io;
   RunsAudioVideoCall60SecsAndLogsInternalMetrics("VP9");
 }
 
 #if BUILDFLAG(RTC_USE_H264)
 
 // Flaky on Windows, crbug.com/703579.
 #if defined(OS_WIN)
 #define MAYBE_MANUAL_RunsAudioVideoCall60SecsAndLogsInternalMetricsH264 \
   DISABLED_MANUAL_RunsAudioVideoCall60SecsAndLogsInternalMetricsH264
 #else
 #define MAYBE_MANUAL_RunsAudioVideoCall60SecsAndLogsInternalMetricsH264 \
   MANUAL_RunsAudioVideoCall60SecsAndLogsInternalMetricsH264
 #endif
 IN_PROC_BROWSER_TEST_F(
     WebRtcInternalsPerfBrowserTest,
     MAYBE_MANUAL_RunsAudioVideoCall60SecsAndLogsInternalMetricsH264) {
+  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 WebRtcInternalsPerfBrowserTest."
         "MANUAL_RunsAudioVideoCall60SecsAndLogsInternalMetricsH264 (test "
         "\"OK\")";
     return;
   }
   RunsAudioVideoCall60SecsAndLogsInternalMetrics("H264");
 }
 
 #endif  // BUILDFLAG(RTC_USE_H264)
 
 IN_PROC_BROWSER_TEST_F(
     WebRtcInternalsPerfBrowserTest,
     MANUAL_RunsOneWayCall60SecsAndLogsInternalMetricsDefault) {
+  base::ThreadRestrictions::ScopedAllowIO allow_io;
   RunsOneWayCall60SecsAndLogsInternalMetrics("", false);
 }
 
 IN_PROC_BROWSER_TEST_F(
     WebRtcInternalsPerfBrowserTest,
     MANUAL_RunsOneWayCall60SecsAndLogsInternalMetricsWithOpusDtx) {
+  base::ThreadRestrictions::ScopedAllowIO allow_io;
   RunsOneWayCall60SecsAndLogsInternalMetrics("", true);
 }