Allow audio debug recordings through a private API extension.

chrome/common/chrome_switches.cc

Index: chrome/common/chrome_switches.cc
diff --git a/chrome/common/chrome_switches.cc b/chrome/common/chrome_switches.cc
index 9443ec0d1d39a115b34bb751c868723ff3af010d..7157eb08cf773c4af1f245534cf7dd97fb227fab 100644
--- a/chrome/common/chrome_switches.cc
+++ b/chrome/common/chrome_switches.cc
@@ -372,6 +372,10 @@ const char kEasyUnlockAppPath[]             = "easy-unlock-app-path";
 // app to their shelf (or platform-specific equivalent)
 const char kEnableAddToShelf[] = "enable-add-to-shelf";
 
+// If the WebRTC logging private API is active, enables AEC dumps.
+const char kEnableAudioDebugRecordingsFromExtension[] =
+    "enable-audio-debug-recordings-from-extension";
+
 // Enable OS integration for Chrome app file associations.
 const char kEnableAppsFileAssociations[]    = "enable-apps-file-associations";