Initial gtk3 support

chrome/browser/ui/libgtk2ui/gtk2_key_bindings_handler.cc

 // Copyright (c) 2012 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 "chrome/browser/ui/libgtk2ui/gtk2_key_bindings_handler.h"
 
 #include <gdk/gdkkeysyms.h>
 #include <X11/Xlib.h>
 #include <X11/XKBlib.h>
 
@@ skipping 43 matching lines @@
   const ui::KeyEvent& key_event = static_cast<const ui::KeyEvent&>(event);
   if (key_event.is_char() || !key_event.native_event())
     return false;
 
   GdkEventKey gdk_event;
   BuildGdkEventKeyFromXEvent(key_event.native_event(), &gdk_event);
 
   edit_commands_.clear();
   // If this key event matches a predefined key binding, corresponding signal
   // will be emitted.
-  gtk_bindings_activate_event(GTK_OBJECT(handler_.get()), &gdk_event);
+
+  gtk_bindings_activate_event(
+#if GDK_MAJOR_VERSION >= 3
+      G_OBJECT(handler_.get()),
+#else
+      GTK_OBJECT(handler_.get()),
+#endif
+      &gdk_event);
 
   bool matched = !edit_commands_.empty();
   if (edit_commands)
     edit_commands->swap(edit_commands_);
   return matched;
 }
 
 GtkWidget* Gtk2KeyBindingsHandler::CreateNewHandler() {
   Handler* handler =
       static_cast<Handler*>(g_object_new(HandlerGetType(), NULL));
@@ skipping 41 matching lines @@
     // whether a modifier key affects the keybinding, but that should be
     // extremely rare.
     static bool logged = false;
     if (!logged) {
       NOTIMPLEMENTED();
       logged = true;
     }
     gdk_event->group = 0;
   }
 
-  gdk_event->keyval = GDK_VoidSymbol;
+  gdk_event->keyval = GDK_KEY_VoidSymbol;
   gdk_keymap_translate_keyboard_state(
       keymap,
       gdk_event->hardware_keycode,
       static_cast<GdkModifierType>(gdk_event->state),
       gdk_event->group,
       &gdk_event->keyval,
       NULL, NULL, &consumed);
 
   state = static_cast<GdkModifierType>(gdk_event->state & ~consumed);
   gdk_keymap_add_virtual_modifiers(keymap, &state);
@@ skipping 250 matching lines @@
   // Just for disabling the default handler.
   return FALSE;
 }
 
 void Gtk2KeyBindingsHandler::MoveFocus(GtkWidget* widget,
                                        GtkDirectionType arg1) {
   // Just for disabling the default handler.
 }
 
 }  // namespace libgtk2ui