Populate storage_unittests target.

content/browser/fileapi/mock_file_update_observer.cc

-// Copyright 2014 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 "base/threading/thread_task_runner_handle.h"
-#include "content/browser/fileapi/mock_file_update_observer.h"
-#include "testing/gtest/include/gtest/gtest.h"
-
-namespace storage {
-
-MockFileUpdateObserver::MockFileUpdateObserver() : is_ready_(false) {
-}
-
-MockFileUpdateObserver::~MockFileUpdateObserver() {
-}
-
-// static
-UpdateObserverList MockFileUpdateObserver::CreateList(
-    MockFileUpdateObserver* observer) {
-  UpdateObserverList list;
-  return list.AddObserver(observer, base::ThreadTaskRunnerHandle::Get().get());
-}
-
-void MockFileUpdateObserver::OnStartUpdate(const FileSystemURL& url) {
-  if (is_ready_)
-    ++start_update_count_[url];
-}
-
-void MockFileUpdateObserver::OnUpdate(const FileSystemURL& url, int64_t delta) {
-  if (!is_ready_)
-    return;
-  int start = start_update_count_[url];
-  int end = end_update_count_[url];
-  EXPECT_LT(0, start - end);
-}
-
-void MockFileUpdateObserver::OnEndUpdate(const FileSystemURL& url) {
-  if (is_ready_)
-    ++end_update_count_[url];
-}
-
-}  // namespace storage