focus reverse traversal was not working for TextfieldViews.

views/controls/textfield/native_textfield_gtk.cc

 // Copyright (c) 2010 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <gdk/gdkkeysyms.h>
 #include <gtk/gtk.h>
 
 #include "views/controls/textfield/native_textfield_gtk.h"
 
 #include "base/logging.h"
@@ skipping 239 matching lines @@
                              !textfield_->IsPassword());
   }
 }
 
 void NativeTextfieldGtk::UpdateEnabled() {
   if (!native_view())
     return;
   SetEnabled(textfield_->IsEnabled());
 }
 
-bool NativeTextfieldGtk::IsPassword() {
-  return textfield_->IsPassword();
-}
-
 gfx::Insets NativeTextfieldGtk::CalculateInsets() {
   if (!native_view())
     return gfx::Insets();
 
   GtkWidget* widget = native_view();
   gfx::Insets insets;
 
   if (textfield_->IsMultiLine()) {
     insets += GetTextViewInnerBorder(GTK_TEXT_VIEW(widget));
   } else {
@@ skipping 48 matching lines @@
 
   if (!textfield_->IsMultiLine()) {
     gfx::Insets insets = GetEntryInnerBorder(GTK_ENTRY(native_view()));
     GtkBorder border = {insets.left(), insets.right(), top, bottom};
     gtk_entry_set_inner_border(GTK_ENTRY(native_view()), &border);
   } else {
     NOTIMPLEMENTED();
   }
 }
 
-void NativeTextfieldGtk::SetFocus() {
+bool NativeTextfieldGtk::SetFocus() {
   Focus();
+  return true;
 }
 
 View* NativeTextfieldGtk::GetView() {
   return this;
 }
 
 gfx::NativeView NativeTextfieldGtk::GetTestingHandle() const {
   return native_view();
 }
 
@@ skipping 95 matching lines @@
     g_signal_connect(widget, "changed",
                      G_CALLBACK(OnChangedHandler), this);
   }
   g_signal_connect_after(widget, "key-press-event",
                          G_CALLBACK(OnKeyPressEventHandler), this);
   // In order to properly trigger Accelerators bound to VKEY_RETURN, we need to
   // send an event when the widget gets the activate signal.
   g_signal_connect(widget, "activate", G_CALLBACK(OnActivateHandler), this);
 }
 
+bool NativeTextfieldGtk::IsPassword() {
+  return textfield_->IsPassword();
+}
+
 }  // namespace views