Split out audio debug recording from RenderProcessHostImpl.

content/browser/media/webrtc_internals.cc

Index: content/browser/media/webrtc_internals.cc
diff --git a/content/browser/media/webrtc_internals.cc b/content/browser/media/webrtc_internals.cc
index 03f6cd04899a3d925a8f4cb49d0419b36d17d7c4..deac9270916d1276186cf1b6134526d171e6864b 100644
--- a/content/browser/media/webrtc_internals.cc
+++ b/content/browser/media/webrtc_internals.cc
@@ -5,6 +5,7 @@
 #include "content/browser/media/webrtc_internals.h"
 
 #include "base/strings/string_number_conversions.h"
+#include "content/browser/media/audio_debug_controller.h"
 #include "content/browser/media/webrtc_internals_ui_observer.h"
 #include "content/browser/web_contents/web_contents_view.h"
 #include "content/public/browser/browser_thread.h"
@@ -270,11 +271,7 @@ void WebRTCInternals::DisableAudioDebugRecordings() {
   // recordings box.
   select_file_dialog_ = NULL;
 
-  for (RenderProcessHost::iterator i(
-           content::RenderProcessHost::AllHostsIterator());
-       !i.IsAtEnd(); i.Advance()) {
-    i.GetCurrentValue()->DisableAudioDebugRecordings();
-  }
+  AudioDebugController::GetInstance()->DisableAudioDebugRecording();
 #endif
 }
 
@@ -386,12 +383,8 @@ void WebRTCInternals::EnableAudioDebugRecordingsOnAllRenderProcessHosts() {
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
 
   audio_debug_recordings_ = true;
-  for (RenderProcessHost::iterator i(
-           content::RenderProcessHost::AllHostsIterator());
-       !i.IsAtEnd(); i.Advance()) {
-    i.GetCurrentValue()->EnableAudioDebugRecordings(
-        audio_debug_recordings_file_path_);
-  }
+  AudioDebugController::GetInstance()->EnableAudioDebugRecording(
+      audio_debug_recordings_file_path_);
 }
 #endif