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

chrome/browser/sync_file_system/local/syncable_file_system_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 "base/stl_util.h"
 #include "chrome/browser/sync_file_system/local/canned_syncable_file_system.h"
 #include "chrome/browser/sync_file_system/local/local_file_change_tracker.h"
 #include "chrome/browser/sync_file_system/local/local_file_sync_context.h"
 #include "chrome/browser/sync_file_system/local/sync_file_system_backend.h"
 #include "chrome/browser/sync_file_system/syncable_file_system_util.h"
 #include "content/public/test/sandbox_file_system_test_helper.h"
 #include "content/public/test/test_browser_thread_bundle.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/async_file_test_helper.h"
 #include "webkit/browser/fileapi/file_system_context.h"
 #include "webkit/browser/fileapi/file_system_operation_context.h"
 #include "webkit/browser/fileapi/isolated_context.h"
 #include "webkit/browser/quota/quota_manager.h"
 #include "webkit/common/fileapi/file_system_types.h"
 #include "webkit/common/quota/quota_types.h"
 
 using base::PlatformFileError;
 using content::SandboxFileSystemTestHelper;
 using fileapi::FileSystemContext;
 using fileapi::FileSystemOperationContext;
 using fileapi::FileSystemURL;
 using fileapi::FileSystemURLSet;
 using quota::QuotaManager;
 using quota::QuotaStatusCode;
 
 namespace sync_file_system {
 
 class SyncableFileSystemTest : public testing::Test {
  public:
   SyncableFileSystemTest()
-      : file_system_(GURL("http://example.com/"),
+      : in_memory_env_(leveldb::NewMemEnv(leveldb::Env::Default())),
+        file_system_(GURL("http://example.com/"),
+                     in_memory_env_.get(),
                      base::MessageLoopProxy::current().get(),
                      base::MessageLoopProxy::current().get()),
         weak_factory_(this) {}
 
   virtual void SetUp() {
     ASSERT_TRUE(data_dir_.CreateUniqueTempDir());
-
     file_system_.SetUp();
 
     sync_context_ =
         new LocalFileSyncContext(data_dir_.path(),
+                                 in_memory_env_.get(),
                                  base::MessageLoopProxy::current().get(),
                                  base::MessageLoopProxy::current().get());
     ASSERT_EQ(
         sync_file_system::SYNC_STATUS_OK,
         file_system_.MaybeInitializeFileSystemContext(sync_context_.get()));
   }
 
   virtual void TearDown() {
     if (sync_context_.get())
       sync_context_->ShutdownOnUIThread();
@@ skipping 33 matching lines @@
   }
 
   LocalFileChangeTracker* change_tracker() {
     return file_system_.backend()->change_tracker();
   }
 
   ScopedEnableSyncFSDirectoryOperation enable_directory_operation_;
 
   base::ScopedTempDir data_dir_;
   content::TestBrowserThreadBundle thread_bundle_;
+  scoped_ptr<leveldb::Env> in_memory_env_;
   CannedSyncableFileSystem file_system_;
 
  private:
   scoped_refptr<LocalFileSyncContext> sync_context_;
 
   base::WeakPtrFactory<SyncableFileSystemTest> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(SyncableFileSystemTest);
 };
 
@@ skipping 164 matching lines @@
   // Now try copying the directory into the syncable file system, which should
   // fail if directory operation is disabled. (http://crbug.com/161442)
   EXPECT_NE(base::File::FILE_OK,
             file_system_.Copy(kSrcDir, URL("dest")));
 
   other_file_system_.TearDown();
   SetEnableSyncFSDirectoryOperation(was_enabled);
 }
 
 }  // namespace sync_file_system