[FileAPI] Replace default leveldb::Env with leveldb::MemEnv in tests.

webkit/browser/fileapi/quota/quota_backend_impl_unittest.cc

 // Copyright 2013 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 "webkit/browser/fileapi/quota/quota_backend_impl.h"
 
 #include <string>
 
 #include "base/files/scoped_temp_dir.h"
 #include "base/message_loop/message_loop.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"
 #include "webkit/browser/fileapi/file_system_usage_cache.h"
 #include "webkit/browser/fileapi/obfuscated_file_util.h"
 #include "webkit/browser/quota/quota_manager_proxy.h"
 
 namespace fileapi {
 
 namespace {
 
 const char kOrigin[] = "http://example.com";
 
@@ skipping 57 matching lines @@
 }  // namespace
 
 class QuotaBackendImplTest : public testing::Test {
  public:
   QuotaBackendImplTest()
       : file_system_usage_cache_(file_task_runner()),
         quota_manager_proxy_(new MockQuotaManagerProxy) {}
 
   virtual void SetUp() OVERRIDE {
     ASSERT_TRUE(data_dir_.CreateUniqueTempDir());
+    in_memory_env_.reset(leveldb::NewMemEnv(leveldb::Env::Default()));
     file_util_.reset(ObfuscatedFileUtil::CreateForTesting(
-        NULL, data_dir_.path(), file_task_runner()));
+        NULL, data_dir_.path(), in_memory_env_.get(), file_task_runner()));
     backend_.reset(new QuotaBackendImpl(file_task_runner(),
                                         file_util_.get(),
                                         &file_system_usage_cache_,
                                         quota_manager_proxy_.get()));
   }
 
   virtual void TearDown() OVERRIDE {
     backend_.reset();
     quota_manager_proxy_ = NULL;
     file_util_.reset();
@@ skipping 24 matching lines @@
     base::FilePath path;
     base::File::Error error =
         backend_->GetUsageCachePath(origin, type, &path);
     EXPECT_EQ(base::File::FILE_OK, error);
     EXPECT_FALSE(path.empty());
     return path;
   }
 
   base::MessageLoop message_loop_;
   base::ScopedTempDir data_dir_;
+  scoped_ptr<leveldb::Env> in_memory_env_;
   scoped_ptr<ObfuscatedFileUtil> file_util_;
   FileSystemUsageCache file_system_usage_cache_;
   scoped_refptr<MockQuotaManagerProxy> quota_manager_proxy_;
   scoped_ptr<QuotaBackendImpl> backend_;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(QuotaBackendImplTest);
 };
 
 TEST_F(QuotaBackendImplTest, ReserveQuota_Basic) {
@@ skipping 94 matching lines @@
   uint32 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 fileapi