Adds support for showing accelerators in bookmark menus.

views/controls/menu/submenu_view.h

Index: views/controls/menu/submenu_view.h
diff --git a/views/controls/menu/submenu_view.h b/views/controls/menu/submenu_view.h
index afef314cf648321dbc36d56ed5146409fbee9772..62d8aa62e2999f0cbf9126c08ec446c959690539 100644
--- a/views/controls/menu/submenu_view.h
+++ b/views/controls/menu/submenu_view.h
@@ -125,6 +125,10 @@ class SubmenuView : public View {
   // references to the MenuHost as the MenuHost is about to be deleted.
   void MenuHostDestroyed();
 
+  // Max width of accelerators in child menu items. This doesn't include
+  // children's children, only direct children.
+  int max_accelerator_width() const { return max_accelerator_width_; }
+
   // Padding around the edges of the submenu.
   static const int kSubmenuBorderSize;
 
@@ -159,6 +163,9 @@ class SubmenuView : public View {
   // Ancestor of the SubmenuView, lazily created.
   MenuScrollViewContainer* scroll_view_container_;
 
+  // See description above getter.
+  int max_accelerator_width_;
+
   DISALLOW_COPY_AND_ASSIGN(SubmenuView);
 };