Gtk3 ui: Add libgtk3ui as a separate build component

chrome/browser/ui/libgtk2ui/gconf_listener.h

Index: chrome/browser/ui/libgtk2ui/gconf_listener.h
diff --git a/chrome/browser/ui/libgtk2ui/gconf_listener.h b/chrome/browser/ui/libgtk2ui/gconf_listener.h
deleted file mode 100644
index 98bd694a987034867367278b2dd95691fa33f21e..0000000000000000000000000000000000000000
--- a/chrome/browser/ui/libgtk2ui/gconf_listener.h
+++ /dev/null
@@ -1,58 +0,0 @@
-// Copyright 2014 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.
-
-#ifndef CHROME_BROWSER_UI_LIBGTK2UI_GCONF_LISTENER_H_
-#define CHROME_BROWSER_UI_LIBGTK2UI_GCONF_LISTENER_H_
-
-#include <gconf/gconf-client.h>
-#include <gtk/gtk.h>
-
-#include <set>
-#include <string>
-
-#include "base/callback_forward.h"
-#include "base/macros.h"
-#include "chrome/browser/ui/libgtk2ui/gtk2_signal.h"
-
-namespace libgtk2ui {
-class Gtk2UI;
-
-// On GNOME desktops, subscribes to the gconf key which controlls button order.
-// Everywhere else, SetTiltebarButtons() just calls back into BrowserTitlebar
-// with the default ordering.
-class GConfListener {
- public:
-  // Sends data to the Gtk2UI when available.
-  explicit GConfListener(Gtk2UI* delegate);
-  ~GConfListener();
-
- private:
-  // Called whenever the metacity key changes.
-  CHROMEG_CALLBACK_2(GConfListener, void, OnChangeNotification,
-                     GConfClient*, guint, GConfEntry*);
-
-  void GetAndRegister(const char* key_to_subscribe,
-                      const base::Callback<void(GConfValue*)>& initial_setter);
-
-  // Checks |error|. On error, prints out a message and closes the connection
-  // to GConf and reverts to default mode.
-  bool HandleGError(GError* error, const char* key);
-
-  // Parses the return data structure from GConf, falling back to the default
-  // value on any error.
-  void ParseAndStoreButtonValue(GConfValue* gconf_value);
-  void ParseAndStoreMiddleClickValue(GConfValue* gconf_value);
-
-  Gtk2UI* delegate_;
-
-  // Pointer to our gconf context. NULL if we aren't on a desktop that uses
-  // gconf.
-  GConfClient* client_;
-
-  DISALLOW_COPY_AND_ASSIGN(GConfListener);
-};
-
-}  // namespace libgtk2ui
-
-#endif  // CHROME_BROWSER_UI_LIBGTK2UI_GCONF_LISTENER_H_