linux_aura: Port GtkKeybindingsHandler to Aura.

chrome/browser/ui/libgtk2ui/gtk2_ui.cc

Index: chrome/browser/ui/libgtk2ui/gtk2_ui.cc
diff --git a/chrome/browser/ui/libgtk2ui/gtk2_ui.cc b/chrome/browser/ui/libgtk2ui/gtk2_ui.cc
index 4a5acffec773247b298334f21f56f139ce456e60..6df091e2f8bdf66731ac32b6fa20f8d85e909814 100644
--- a/chrome/browser/ui/libgtk2ui/gtk2_ui.cc
+++ b/chrome/browser/ui/libgtk2ui/gtk2_ui.cc
@@ -18,6 +18,7 @@
 #include "chrome/browser/ui/libgtk2ui/app_indicator_icon.h"
 #include "chrome/browser/ui/libgtk2ui/chrome_gtk_frame.h"
 #include "chrome/browser/ui/libgtk2ui/gtk2_border.h"
+#include "chrome/browser/ui/libgtk2ui/gtk2_key_bindings_handler.h"
 #include "chrome/browser/ui/libgtk2ui/gtk2_signal_registrar.h"
 #include "chrome/browser/ui/libgtk2ui/gtk2_util.h"
 #include "chrome/browser/ui/libgtk2ui/native_theme_gtk2.h"
@@ -343,6 +344,8 @@ void Gtk2UI::Initialize() {
   printing::PrintingContextLinux::SetPdfPaperSizeFunction(
       &GetPdfPaperSizeDeviceUnitsGtk);
 
+  content::KeybindingHandlerFactoryAuraX11::SetFactory(this);
+
 #if defined(USE_GCONF)
   // We must build this after GTK gets initialized.
   titlebar_listener_.reset(new GConfTitlebarListener(this));
@@ -665,6 +668,10 @@ void Gtk2UI::NotifyWindowManagerStartupComplete() {
   gdk_notify_startup_complete();
 }
 
+content::KeybindingHandlerAuraX11* Gtk2UI::Create() {
+  return new Gtk2KeyBindingsHandler;
+}
+
 void Gtk2UI::GetScrollbarColors(GdkColor* thumb_active_color,
                                 GdkColor* thumb_inactive_color,
                                 GdkColor* track_color) {