Accumulate FileSystemUsageCache updates.

webkit/fileapi/local_file_system_quota_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.
 
 // This test checks the entire behavior of FileSystem usage and quota, such as:
 // 1) the actual size of files on disk,
 // 2) the described size in .usage, and
 // 3) the result of QuotaManager::GetUsageAndQuota.
 
 #include "base/bind.h"
@@ skipping 70 matching lines @@
   FilePath PlatformPath(const FilePath& virtual_path) {
     return test_helper_.GetLocalPath(virtual_path);
   }
 
   int64 ActualFileSize() {
     return test_helper_.ComputeCurrentOriginUsage() -
         test_helper_.ComputeCurrentDirectoryDatabaseUsage();
   }
 
   int64 SizeByQuotaUtil() {
+    MessageLoop::current()->RunUntilIdle();
     return test_helper_.GetCachedOriginUsage();
   }
 
   void GetUsageAndQuotaFromQuotaManager() {
     quota_manager_->GetUsageAndQuota(
         test_helper_.origin(), test_helper_.storage_type(),
         base::Bind(&LocalFileSystemQuotaTest::OnGetUsageAndQuota,
                    weak_factory_.GetWeakPtr()));
     MessageLoop::current()->RunUntilIdle();
   }
@@ skipping 239 matching lines @@
 
   EXPECT_EQ(2 * child_file_size + 3 * grandchild_file_size, ActualFileSize());
   EXPECT_EQ(expected_usage, SizeByQuotaUtil());
   GetUsageAndQuotaFromQuotaManager();
   EXPECT_EQ(quota::kQuotaStatusOk, quota_status());
   EXPECT_EQ(expected_usage, usage());
   ASSERT_LT(expected_usage, quota());
 }
 
 }  // namespace fileapi