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

chrome/test/ppapi/ppapi_test.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/ppapi/ppapi_test.h"
 
 #include "base/command_line.h"
 #include "base/file_util.h"
 #include "base/logging.h"
 #include "base/path_service.h"
@@ skipping 55 matching lines @@
       waiting_(false),
       timeout_(timeout) {
   registrar_.Add(this, content::NOTIFICATION_DOM_OPERATION_RESPONSE,
                  content::Source<RenderViewHost>(render_view_host));
   timer_.Start(FROM_HERE, timeout, this, &TestFinishObserver::OnTimeout);
 }
 
 bool PPAPITestBase::TestFinishObserver::WaitForFinish() {
   if (!finished_) {
     waiting_ = true;
-    ui_test_utils::RunMessageLoop();
+    content::RunMessageLoop();
     waiting_ = false;
   }
   return finished_;
 }
 
 void PPAPITestBase::TestFinishObserver::Observe(
     int type,
     const content::NotificationSource& source,
     const content::NotificationDetails& details) {
   DCHECK(type == content::NOTIFICATION_DOM_OPERATION_RESPONSE);
@@ skipping 283 matching lines @@
 }
 
 // Append the correct mode and testcase string
 std::string PPAPINaClTestDisallowedSockets::BuildQuery(
     const std::string& base,
     const std::string& test_case) {
   return StringPrintf("%smode=nacl_newlib&testcase=%s", base.c_str(),
                       test_case.c_str());
 }