Add 2-lines summary to CC/Address for Wallet items.

ui/base/models/menu_model.h

Index: ui/base/models/menu_model.h
diff --git a/ui/base/models/menu_model.h b/ui/base/models/menu_model.h
index 095dde521d94204ee250f4e47fff7bc4c5bff4a9..39c31085a9ac84ba195741ee75bb01ff6ae1a0f5 100644
--- a/ui/base/models/menu_model.h
+++ b/ui/base/models/menu_model.h
@@ -58,16 +58,23 @@ class UI_EXPORT MenuModel {
   // Returns the label of the item at the specified index.
   virtual string16 GetLabelAt(int index) const = 0;
 
-  // Returns true if the menu item (label/icon) at the specified index can
-  // change over the course of the menu's lifetime. If this function returns
-  // true, the label and icon of the menu item will be updated each time the
-  // menu is shown.
+  // Returns the sub-label of the item at the specified index.
+  virtual string16 GetSubLabelAt(int index) const;
+
+  // Returns true if the menu item (label/sub-label/icon) at the specified
+  // index can change over the course of the menu's lifetime. If this function
+  // returns true, the label and icon of the menu item will be updated each time
+  // the menu is shown.
   virtual bool IsItemDynamicAt(int index) const = 0;
 
   // Returns the font use for the label at the specified index.
   // If NULL, then use default font.
   virtual const gfx::Font* GetLabelFontAt(int index) const;
 
+  // Returns the font use for the sub-label at the specified index.
+  // If NULL, then use default font.
+  virtual const gfx::Font* GetSubLabelFontAt(int index) const;
+
   // Gets the acclerator information for the specified index, returning true if
   // there is a shortcut accelerator for the item, false otherwise.
   virtual bool GetAcceleratorAt(int index,