[DevTools] Move DevToolsWindow testing code to a separate class.

chrome/test/base/ui_test_utils.cc

Index: chrome/test/base/ui_test_utils.cc
diff --git a/chrome/test/base/ui_test_utils.cc b/chrome/test/base/ui_test_utils.cc
index 2fa3c021fb5d110942a478f235415f02606188ea..978835bd9958cd22f6f1da1cf3998e8e50da360d 100644
--- a/chrome/test/base/ui_test_utils.cc
+++ b/chrome/test/base/ui_test_utils.cc
@@ -28,7 +28,6 @@
 #include "chrome/browser/bookmarks/bookmark_model_factory.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/chrome_notification_types.h"
-#include "chrome/browser/devtools/devtools_window.h"
 #include "chrome/browser/extensions/extension_action.h"
 #include "chrome/browser/history/history_service_factory.h"
 #include "chrome/browser/profiles/profile.h"
@@ -268,13 +267,6 @@ void NavigateToURLBlockUntilNavigationsComplete(Browser* browser,
       BROWSER_TEST_WAIT_FOR_NAVIGATION);
 }
 
-void WaitUntilDevToolsWindowLoaded(DevToolsWindow* window) {
-  scoped_refptr<content::MessageLoopRunner> runner =
-      new content::MessageLoopRunner;
-  window->SetLoadCompletedCallback(runner->QuitClosure());
-  runner->Run();
-}
-
 base::FilePath GetTestFilePath(const base::FilePath& dir,
                                const base::FilePath& file) {
   base::FilePath path;