gdata: Fix a bug that blocked FILE thread when loading large feeds.

chrome/browser/chromeos/gdata/gdata_file_system_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 <errno.h>
 #include <string>
 #include <vector>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 754 matching lines @@
     ASSERT_TRUE(file_util::CreateDirectory(cache_dir_path));
     ASSERT_TRUE(file_util::CopyFile(file_path,
         cache_dir_path.Append(meta_cache_path.BaseName())));
 
     ReadOnlyFindFileDelegate delegate;
     file_system_->LoadRootFeedFromCache(
         FilePath(FILE_PATH_LITERAL("gdata")),
         false,     // load_from_server
         base::Bind(&GDataFileSystemTest::OnExpectToFindFile,
                    FilePath(FILE_PATH_LITERAL("gdata"))));
-    RunAllPendingForIO();
+    BrowserThread::GetBlockingPool()->FlushForTesting();
+    message_loop_.RunAllPending();
   }
 
   static void OnExpectToFindFile(const FilePath& search_file_path,
                                  base::PlatformFileError error,
                                  const FilePath& directory_path,
                                  GDataFileBase* file) {
     ASSERT_TRUE(file);
     if (file->file_info().is_directory)
       ASSERT_EQ(search_file_path, directory_path);
     else
@@ skipping 1743 matching lines @@
 
   // Verify account meta feed is saved to cache.
   RunAllPendingForIO();
   FilePath path = file_system_->cache_paths_[
       GDataRootDirectory::CACHE_TYPE_META].Append(
           FILE_PATH_LITERAL("account_metadata.json"));
   EXPECT_TRUE(file_util::PathExists(path));
 }
 
 }   // namespace gdata