Fix IWYU violators that don't include scoped_ptr.h in Windows build.

content/browser/quota/quota_backend_impl_unittest.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 "storage/browser/fileapi/quota/quota_backend_impl.h"
 
 #include <stdint.h>
 
 #include <string>
 
 #include "base/files/scoped_temp_dir.h"
 #include "base/macros.h"
+#include "base/memory/scoped_ptr.h"
 #include "base/thread_task_runner_handle.h"
 #include "storage/browser/fileapi/file_system_usage_cache.h"
 #include "storage/browser/fileapi/obfuscated_file_util.h"
 #include "storage/browser/quota/quota_manager_proxy.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "third_party/leveldatabase/src/helpers/memenv/memenv.h"
 #include "third_party/leveldatabase/src/include/leveldb/env.h"
 
 using storage::FileSystemUsageCache;
 using storage::ObfuscatedFileUtil;
@@ skipping 242 matching lines @@
   uint32_t dirty = 0;
   ASSERT_TRUE(file_system_usage_cache_.GetDirty(path, &dirty));
   EXPECT_EQ(1u, dirty);
 
   backend_->DecrementDirtyCount(GURL(kOrigin), type);
   ASSERT_TRUE(file_system_usage_cache_.GetDirty(path, &dirty));
   EXPECT_EQ(0u, dirty);
 }
 
 }  // namespace content