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

chrome/browser/sync_file_system/local/local_file_sync_service.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 "chrome/browser/sync_file_system/local/local_file_sync_service.h"
 
 #include "base/stl_util.h"
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/extensions/extension_system.h"
 #include "chrome/browser/profiles/profile.h"
@@ skipping 78 matching lines @@
 void LocalFileSyncService::OriginChangeMap::SetOriginEnabled(
     const GURL& origin, bool enabled) {
   if (enabled)
     disabled_origins_.erase(origin);
   else
     disabled_origins_.insert(origin);
 }
 
 // LocalFileSyncService -------------------------------------------------------
 
-LocalFileSyncService::LocalFileSyncService(Profile* profile)
-    : profile_(profile),
-      sync_context_(new LocalFileSyncContext(
-          profile_->GetPath(),
-          BrowserThread::GetMessageLoopProxyForThread(BrowserThread::UI).get(),
-          BrowserThread::GetMessageLoopProxyForThread(BrowserThread::IO)
-              .get())),
-      local_change_processor_(NULL) {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
-  sync_context_->AddOriginChangeObserver(this);
+scoped_ptr<LocalFileSyncService> LocalFileSyncService::Create(
+    Profile* profile) {
+  return make_scoped_ptr(new LocalFileSyncService(profile, NULL));
+}
+
+scoped_ptr<LocalFileSyncService> LocalFileSyncService::CreateForTesting(
+    Profile* profile,
+    leveldb::Env* env) {
+  return make_scoped_ptr(new LocalFileSyncService(profile, env));
 }
 
 LocalFileSyncService::~LocalFileSyncService() {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 }
 
 void LocalFileSyncService::Shutdown() {
   sync_context_->RemoveOriginChangeObserver(this);
   sync_context_->ShutdownOnUIThread();
   profile_ = NULL;
@@ skipping 194 matching lines @@
   FOR_EACH_OBSERVER(Observer, change_observers_,
                     OnLocalChangeAvailable(num_changes));
 }
 
 void LocalFileSyncService::SetOriginEnabled(const GURL& origin, bool enabled) {
   if (!ContainsKey(origin_to_contexts_, origin))
     return;
   origin_change_map_.SetOriginEnabled(origin, enabled);
 }
 
+LocalFileSyncService::LocalFileSyncService(Profile* profile,
+                                           leveldb::Env* env_override)
+    : profile_(profile),
+      sync_context_(new LocalFileSyncContext(
+          profile_->GetPath(),
+          env_override,
+          BrowserThread::GetMessageLoopProxyForThread(BrowserThread::UI).get(),
+          BrowserThread::GetMessageLoopProxyForThread(BrowserThread::IO)
+              .get())),
+      local_change_processor_(NULL) {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+  sync_context_->AddOriginChangeObserver(this);
+}
+
 void LocalFileSyncService::DidInitializeFileSystemContext(
     const GURL& app_origin,
     fileapi::FileSystemContext* file_system_context,
     const SyncStatusCallback& callback,
     SyncStatusCode status) {
   if (status != SYNC_STATUS_OK) {
     callback.Run(status);
     return;
   }
   DCHECK(file_system_context);
@@ skipping 135 matching lines @@
 
 LocalChangeProcessor* LocalFileSyncService::GetLocalChangeProcessor(
     const FileSystemURL& url) {
   if (!get_local_change_processor_.is_null())
     return get_local_change_processor_.Run(url.origin());
   DCHECK(local_change_processor_);
   return local_change_processor_;
 }
 
 }  // namespace sync_file_system