Move ui_test_utils::RunMessageLoop to test_utils so that it can be reused by content_browsertests.

chrome/test/base/ui_test_utils_gtk.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/test/base/ui_test_utils.h"
 
 #include <gtk/gtk.h>
 
 #include "base/bind.h"
 #include "base/logging.h"
@@ skipping 40 matching lines @@
   DCHECK(browser_window);
   gfx::NativeWindow window = browser_window->GetNativeWindow();
   DCHECK(window);
   GtkWidget* view = ViewIDUtil::GetWidget(GTK_WIDGET(window), vid);
   DCHECK(view);
   MoveMouseToCenterAndPress(
       view,
       ui_controls::LEFT,
       ui_controls::DOWN | ui_controls::UP,
       MessageLoop::QuitClosure());
-  RunMessageLoop();
+  content::RunMessageLoop();
 }
 
 void HideNativeWindow(gfx::NativeWindow window) {
   gtk_widget_hide(GTK_WIDGET(window));
 }
 
 bool ShowAndFocusNativeWindow(gfx::NativeWindow window) {
   if (!gtk_window_has_toplevel_focus(GTK_WINDOW(window)))
     gtk_window_present(GTK_WINDOW(window));
   return true;
 }
 
 void MoveMouseToCenterAndPress(GtkWidget* widget,
                                ui_controls::MouseButton button,
                                int state,
                                const base::Closure& task) {
   gfx::Rect bounds = ui::GetWidgetScreenBounds(widget);
   ui_controls::SendMouseMoveNotifyWhenDone(
       bounds.x() + bounds.width() / 2,
       bounds.y() + bounds.height() / 2,
       base::Bind(&internal::ClickTask, button, state, task));
 }
 
 }  // namespace ui_test_utils