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

chrome/browser/extensions/api/downloads/downloads_api_unittest.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 <algorithm>
 
 #include "base/file_util.h"
 #include "base/json/json_reader.h"
 #include "base/json/json_writer.h"
 #include "base/message_loop.h"
@@ skipping 950 matching lines @@
 
   // Now create another download.
   download_item = CreateSlowTestDownload();
   ASSERT_TRUE(download_item);
   expected_path = download_item->GetTargetFilePath();
 
   // Cancel the download. As long as the download has a target path, we should
   // be able to query the file icon.
   download_item->Cancel(true);
   // Let cleanup complete on the FILE thread.
-  ui_test_utils::RunAllPendingInMessageLoop(BrowserThread::FILE);
+  content::RunAllPendingInMessageLoop(BrowserThread::FILE);
   args = base::StringPrintf("[%d, {\"size\": 32}]", download_item->GetId());
   EXPECT_TRUE(RunFunctionAndReturnString(new DownloadsGetFileIconFunction(),
                                          args, &result_string));
   ExpectDataURLIsPNGWithSize(result_string, 32);
 
   // Check the path passed to the icon extractor post-cancellation.
   function = new DownloadsGetFileIconFunction();
   function->SetIconExtractorForTesting(new MockIconExtractorImpl(
       expected_path, IconLoader::NORMAL, "foo"));
   EXPECT_TRUE(RunFunctionAndReturnString(function.release(), args,
@@ skipping 1172 matching lines @@
                           "  \"state\": {"
                           "    \"previous\": \"in_progress\","
                           "    \"current\": \"complete\"}}]",
                           result_id,
                           GetFilename("on_record.txt.crdownload").c_str(),
                           GetFilename("on_record.txt").c_str())));
   std::string disk_data;
   EXPECT_TRUE(file_util::ReadFileToString(item->GetFullPath(), &disk_data));
   EXPECT_STREQ(kPayloadData, disk_data.c_str());
 }