Reverse menu anchor position provided to views::MenuItemView for RTL languages.

views/controls/menu/menu_item_view.h

Index: views/controls/menu/menu_item_view.h
diff --git a/views/controls/menu/menu_item_view.h b/views/controls/menu/menu_item_view.h
index 8d293dca2637222eace74946d25d7e6b7a78a969..f24dadd48842e269c7d9c58369516a0439a0cf11 100644
--- a/views/controls/menu/menu_item_view.h
+++ b/views/controls/menu/menu_item_view.h
@@ -90,7 +90,8 @@ class MenuItemView : public View {
     EMPTY
   };
 
-  // Where the menu should be anchored to.
+  // Where the menu should be anchored to for non-RTL languages.  The
+  // opposite position will be used if base::i18n:IsRTL() is true.
   enum AnchorPosition {
     TOPLEFT,
     TOPRIGHT
@@ -122,7 +123,8 @@ class MenuItemView : public View {
   // Run methods. See description above class for details. Both Run methods take
   // a rectangle, which is used to position the menu. |has_mnemonics| indicates
   // whether the items have mnemonics. Mnemonics are identified by way of the
-  // character following the '&'.
+  // character following the '&'.  The anchor position is specified for non-RTL
+  // languages; the opposite value will be used for RTL.
   void RunMenuAt(gfx::NativeWindow parent,
                  MenuButton* button,
                  const gfx::Rect& bounds,