Enable the optional permission prompt persistence toggle on grouped infobars

chrome/browser/media/media_stream_devices_controller.h

Index: chrome/browser/media/media_stream_devices_controller.h
diff --git a/chrome/browser/media/media_stream_devices_controller.h b/chrome/browser/media/media_stream_devices_controller.h
index eca57a8eecabfcdef83439a7c6193bfa5632112e..1560d81ed46b34ba72353ff9935162dcc3a80e48 100644
--- a/chrome/browser/media/media_stream_devices_controller.h
+++ b/chrome/browser/media/media_stream_devices_controller.h
@@ -11,6 +11,7 @@
 #include "base/macros.h"
 #include "chrome/browser/permissions/permission_request.h"
 #include "components/content_settings/core/common/content_settings.h"
+#include "content/public/browser/permission_type.h"
 #include "content/public/browser/web_contents_delegate.h"
 
 class Profile;
@@ -41,6 +42,11 @@ class MediaStreamDevicesController : public PermissionRequest {
   bool IsAskingForVideo() const;
   base::string16 GetMessageText() const;
 
+  // Returns the PermissionsType associated with the provided
+  // ContentSettingsType. |type| must be a media stream type.
+  content::PermissionType GetPermissionTypeForContentSettingsType(
+      ContentSettingsType content_type) const;
+
   // Forces the permissions to be denied (without being persisted) regardless
   // of what the previous state was.  If the user had previously allowed the
   // site video or audio access, this ignores that and informs the site it was