GTK: Move code shared by future content/ classes and chrome/ to ui/.

chrome/browser/ui/gtk/focus_store_gtk.cc

Index: chrome/browser/ui/gtk/focus_store_gtk.cc
diff --git a/chrome/browser/ui/gtk/focus_store_gtk.cc b/chrome/browser/ui/gtk/focus_store_gtk.cc
deleted file mode 100644
index 7eb904773637a450e44a155cc2616c61cdfc18c1..0000000000000000000000000000000000000000
--- a/chrome/browser/ui/gtk/focus_store_gtk.cc
+++ /dev/null
@@ -1,50 +0,0 @@
-// Copyright (c) 2011 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/gtk/focus_store_gtk.h"
-
-#include <gtk/gtk.h>
-
-#include "chrome/browser/platform_util.h"
-
-FocusStoreGtk::FocusStoreGtk()
-    : widget_(NULL),
-      destroy_handler_id_(0) {
-}
-
-FocusStoreGtk::~FocusStoreGtk() {
-  DisconnectDestroyHandler();
-}
-
-void FocusStoreGtk::Store(GtkWidget* widget) {
-  GtkWidget* focus_widget = NULL;
-  if (widget) {
-    GtkWindow* window = platform_util::GetTopLevel(widget);
-    if (window)
-      focus_widget = window->focus_widget;
-  }
-
-  SetWidget(focus_widget);
-}
-
-void FocusStoreGtk::SetWidget(GtkWidget* widget) {
-  DisconnectDestroyHandler();
-
-  // We don't add a ref. The signal handler below effectively gives us a weak
-  // reference.
-  widget_ = widget;
-  if (widget_) {
-    // When invoked, |gtk_widget_destroyed| will set |widget_| to NULL.
-    destroy_handler_id_ = g_signal_connect(widget_, "destroy",
-                                           G_CALLBACK(gtk_widget_destroyed),
-                                           &widget_);
-  }
-}
-
-void FocusStoreGtk::DisconnectDestroyHandler() {
-  if (widget_) {
-    g_signal_handler_disconnect(widget_, destroy_handler_id_);
-    widget_ = NULL;
-  }
-}