add "always allow" option to the mediastream infobar and allow user to allow/not allow acces to devi

chrome/browser/media/media_stream_devices_menu_model.h

Index: chrome/browser/media/media_stream_devices_menu_model.h
diff --git a/chrome/browser/media/media_stream_devices_menu_model.h b/chrome/browser/media/media_stream_devices_menu_model.h
index 866234762ad63d7a7610e9ddb6a9d8ccd69fdcd8..530b19aa5c2813d193ea5cbf99f37ecfc9914e36 100644
--- a/chrome/browser/media/media_stream_devices_menu_model.h
+++ b/chrome/browser/media/media_stream_devices_menu_model.h
@@ -30,6 +30,8 @@ class MediaStreamDevicesMenuModel : public ui::SimpleMenuModel,
       content::MediaStreamDeviceType type,
       std::string* device_id) const;
 
+  bool always_allow() const { return always_allow_; }
+
   // ui::SimpleMenuModel::Delegate implementation:
   virtual bool IsCommandIdChecked(int command_id) const OVERRIDE;
   virtual bool IsCommandIdEnabled(int command_id) const OVERRIDE;
@@ -44,6 +46,9 @@ class MediaStreamDevicesMenuModel : public ui::SimpleMenuModel,
   // Internal method to add the |devices| to the current menu.
   void AddDevices(const content::MediaStreamDevices& devices);
 
+  // Internal method to add "always allow" option to the current menu.
+  void AddAlwaysAllowOption(bool audio, bool video);
+
   // Map of command IDs to devices.
   CommandMap commands_;
 
@@ -52,6 +57,8 @@ class MediaStreamDevicesMenuModel : public ui::SimpleMenuModel,
   int selected_command_id_audio_;
   int selected_command_id_video_;
 
+  bool always_allow_;
+
   DISALLOW_COPY_AND_ASSIGN(MediaStreamDevicesMenuModel);
 };