Create content\public\test\test_utils.h to hold common test classes that are used by unit and brows…

chrome/browser/ui/panels/old_docked_panel_browsertest.cc

Index: chrome/browser/ui/panels/old_docked_panel_browsertest.cc
===================================================================
--- chrome/browser/ui/panels/old_docked_panel_browsertest.cc	(revision 147577)
+++ chrome/browser/ui/panels/old_docked_panel_browsertest.cc	(working copy)
@@ -9,8 +9,8 @@
 #include "chrome/browser/ui/panels/panel_manager.h"
 #include "chrome/browser/ui/panels/test_panel_mouse_watcher.h"
 #include "chrome/common/chrome_notification_types.h"
-#include "chrome/test/base/ui_test_utils.h"
 #include "content/public/browser/notification_service.h"
+#include "content/public/test/test_utils.h"
 
 class OldDockedPanelBrowserTest : public OldBasePanelBrowserTest {
  public:
@@ -193,7 +193,7 @@
   EXPECT_EQ(width_of_panel3_squeezed, panel3->GetBounds().width());
 
   // Minimize the active panel. It should become inactive and shrink in width.
-  ui_test_utils::WindowedNotificationObserver signal(
+  content::WindowedNotificationObserver signal(
       chrome::NOTIFICATION_PANEL_STRIP_UPDATED,
       content::NotificationService::AllSources());
   panel7->Minimize();