linux_aura: Port GtkKeybindingsHandler to Aura.

ui/views/linux_ui/linux_ui.cc

 // Copyright 2013 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 "ui/views/linux_ui/linux_ui.h"
 
 #include "ui/base/ime/linux/linux_input_method_context_factory.h"
 #include "ui/gfx/linux_font_delegate.h"
 #include "ui/shell_dialogs/linux_shell_dialog.h"
 
 namespace {
 
 views::LinuxUI* g_linux_ui = NULL;
 
 }  // namespace
 
 namespace views {
 
 void LinuxUI::SetInstance(LinuxUI* instance) {
   delete g_linux_ui;
   g_linux_ui = instance;
   LinuxInputMethodContextFactory::SetInstance(instance);
   LinuxFontDelegate::SetInstance(instance);
   LinuxShellDialog::SetInstance(instance);
+  ui::SetTextEditKeyBindingsDelegate(instance);
 }
 
 LinuxUI* LinuxUI::instance() {
   return g_linux_ui;
 }
 
 }  // namespace views