Move RunAllPendingInMessageLoop from ui_test_utils.h to test_utils.h, so that it can be reused by c…

chrome/browser/ui/global_error/global_error_service_browsertest.cc

Index: chrome/browser/ui/global_error/global_error_service_browsertest.cc
===================================================================
--- chrome/browser/ui/global_error/global_error_service_browsertest.cc	(revision 149002)
+++ chrome/browser/ui/global_error/global_error_service_browsertest.cc	(working copy)
@@ -116,7 +116,7 @@
   // Explicitly close the bubble view.
   EXPECT_TRUE(error->GetBubbleView());
   error->GetBubbleView()->CloseBubbleView();
-  ui_test_utils::RunAllPendingInMessageLoop();
+  content::RunAllPendingInMessageLoop();
   EXPECT_EQ(1, error->bubble_view_close_count());
 }
 
@@ -137,14 +137,14 @@
 
   EXPECT_EQ(error.get(), service->GetFirstGlobalErrorWithBubbleView());
   error->ShowBubbleView(browser());
-  ui_test_utils::RunAllPendingInMessageLoop();
+  content::RunAllPendingInMessageLoop();
   EXPECT_TRUE(error->HasShownBubbleView());
   EXPECT_EQ(0, error->bubble_view_close_count());
 
   // Removing |error| from profile should dismiss the bubble view without
   // calling |error->BubbleViewDidClose|.
   service->RemoveGlobalError(error.get());
-  ui_test_utils::RunAllPendingInMessageLoop();
+  content::RunAllPendingInMessageLoop();
   EXPECT_EQ(1, error->bubble_view_close_count());
   // |error| is no longer owned by service and will be deleted.
 }