Update uses of UTF conversions in content/ to use the base:: namespace.

content/shell/browser/shell_login_dialog_gtk.cc

Index: content/shell/browser/shell_login_dialog_gtk.cc
diff --git a/content/shell/browser/shell_login_dialog_gtk.cc b/content/shell/browser/shell_login_dialog_gtk.cc
index 3241e37cb0c1295bf484bf706989a2e66efa83c4..bf2436119e8c6dbdada2e31f772116044c004694 100644
--- a/content/shell/browser/shell_login_dialog_gtk.cc
+++ b/content/shell/browser/shell_login_dialog_gtk.cc
@@ -46,7 +46,7 @@ void ShellLoginDialog::PlatformCreateDialog(const base::string16& message) {
                                  "Please log in.");
 
   GtkWidget* content_area = gtk_dialog_get_content_area(GTK_DIALOG(root_));
-  GtkWidget* label = gtk_label_new(UTF16ToUTF8(message).c_str());
+  GtkWidget* label = gtk_label_new(base::UTF16ToUTF8(message).c_str());
   gtk_label_set_line_wrap(GTK_LABEL(label), TRUE);
   gtk_box_pack_start(GTK_BOX(content_area), label, FALSE, FALSE, 0);
 
@@ -94,8 +94,8 @@ void ShellLoginDialog::OnResponse(GtkWidget* sender, int response_id) {
   switch (response_id) {
     case GTK_RESPONSE_OK:
       UserAcceptedAuth(
-          UTF8ToUTF16(gtk_entry_get_text(GTK_ENTRY(username_entry_))),
-          UTF8ToUTF16(gtk_entry_get_text(GTK_ENTRY(password_entry_))));
+          base::UTF8ToUTF16(gtk_entry_get_text(GTK_ENTRY(username_entry_))),
+          base::UTF8ToUTF16(gtk_entry_get_text(GTK_ENTRY(password_entry_))));
       break;
     case GTK_RESPONSE_CANCEL:
     case GTK_RESPONSE_DELETE_EVENT: