Intiialize AudioManager and related class lazily

content/browser/media/webrtc/webrtc_audio_debug_recordings_browsertest.cc

Index: content/browser/media/webrtc/webrtc_audio_debug_recordings_browsertest.cc
diff --git a/content/browser/media/webrtc/webrtc_audio_debug_recordings_browsertest.cc b/content/browser/media/webrtc/webrtc_audio_debug_recordings_browsertest.cc
index f098d77ae4e9de93e2607608dcd876222e807985..4a3306ad4ef91791b661d78a8abe32c832a1eb1b 100644
--- a/content/browser/media/webrtc/webrtc_audio_debug_recordings_browsertest.cc
+++ b/content/browser/media/webrtc/webrtc_audio_debug_recordings_browsertest.cc
@@ -8,6 +8,7 @@
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/stringprintf.h"
 #include "build/build_config.h"
+#include "content/browser/browser_main_loop.h"
 #include "content/browser/media/webrtc/webrtc_internals.h"
 #include "content/browser/web_contents/web_contents_impl.h"
 #include "content/public/test/browser_test_utils.h"
@@ -73,6 +74,10 @@ class WebRtcAudioDebugRecordingsBrowserTest : public WebRtcContentBrowserTest {
     AppendUseFakeUIForMediaStreamFlag();
   }
   ~WebRtcAudioDebugRecordingsBrowserTest() override {}
+
+  void SetUpOnMainThread() override {
+    BrowserMainLoop::GetInstance()->InitializeMediaComponentsIfNeeded();
+  }
 };
 
 #if defined(OS_LINUX) && !defined(OS_CHROMEOS) && defined(ARCH_CPU_ARM_FAMILY)