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 40aa91baaec23615a1cccddf46369c8e1dc25a35..3519d5c922f976326b0e7f3036a2a7887c46eb6d 100644
--- a/content/browser/media/webrtc_internals.cc
+++ b/content/browser/media/webrtc_internals.cc
@@ -8,6 +8,7 @@
 
 #include "base/strings/string_number_conversions.h"
 #include "build/build_config.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"
@@ -281,11 +282,7 @@ 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
 }
 
@@ -450,12 +447,8 @@ 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_);
 }
 
 void WebRTCInternals::EnableEventLogRecordingsOnAllRenderProcessHosts() {