Update some uses of UTF conversions in chrome/browser to use the base:: namespace.

chrome/browser/ui/gtk/bookmarks/bookmark_sub_menu_model_gtk.cc

Index: chrome/browser/ui/gtk/bookmarks/bookmark_sub_menu_model_gtk.cc
diff --git a/chrome/browser/ui/gtk/bookmarks/bookmark_sub_menu_model_gtk.cc b/chrome/browser/ui/gtk/bookmarks/bookmark_sub_menu_model_gtk.cc
index e119c4228f011622b59529273c36c7bff9d87d3e..903bff4de412b472544b3d11b0feee59468e1195 100644
--- a/chrome/browser/ui/gtk/bookmarks/bookmark_sub_menu_model_gtk.cc
+++ b/chrome/browser/ui/gtk/bookmarks/bookmark_sub_menu_model_gtk.cc
@@ -82,7 +82,7 @@ void BookmarkNodeMenuModel::PopulateMenu() {
       // Ironically the label will end up getting converted back to UTF8 later.
       // We need to escape any Windows-style "&" characters since they will be
       // converted in MenuGtk outside of our control here.
-      const base::string16 label = UTF8ToUTF16(
+      const base::string16 label = base::UTF8ToUTF16(
           ui::EscapeWindowsStyleAccelerators(BuildMenuLabelFor(child)));
       // No command id. We override ActivatedAt below to handle activations.
       AddItem(kBookmarkItemCommandId, label);
@@ -102,8 +102,8 @@ void BookmarkNodeMenuModel::AddSubMenuForNode(const BookmarkNode* node) {
   // Ironically the label will end up getting converted back to UTF8 later.
   // We need to escape any Windows-style "&" characters since they will be
   // converted in MenuGtk outside of our control here.
-  const base::string16 label =
-      UTF8ToUTF16(ui::EscapeWindowsStyleAccelerators(BuildMenuLabelFor(node)));
+  const base::string16 label = base::UTF8ToUTF16(
+      ui::EscapeWindowsStyleAccelerators(BuildMenuLabelFor(node)));
   // Don't pass in the delegate, if any. Bookmark submenus don't need one.
   BookmarkNodeMenuModel* submenu =
       new BookmarkNodeMenuModel(NULL, model_, node, page_navigator_, profile_);