Always pass FileSystemContext to ObfuscatedFileUtil operations

chrome/browser/browsing_data_file_system_helper.cc

 // Copyright (c) 2012 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/browsing_data_file_system_helper.h"
 
 #include "base/bind.h"
 #include "base/compiler_specific.h"
 #include "base/file_util.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 98 matching lines @@
           &BrowsingDataFileSystemHelperImpl::DeleteFileSystemOriginInFileThread,
           this, origin));
 }
 
 void BrowsingDataFileSystemHelperImpl::FetchFileSystemInfoInFileThread() {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::FILE));
   scoped_ptr<fileapi::SandboxMountPointProvider::OriginEnumerator>
       origin_enumerator(BrowserContext::GetFileSystemContext(profile_)->
           sandbox_provider()->CreateOriginEnumerator());
 
+  scoped_refptr<fileapi::FileSystemContext> context =
+      BrowserContext::GetFileSystemContext(profile_);
+
   // We don't own this pointer; it's a magic singleton generated by the
   // profile's FileSystemContext. Deleting it would be a bad idea.
   fileapi::FileSystemQuotaUtil* quota_util =
-      BrowserContext::GetFileSystemContext(profile_)->GetQuotaUtil(
-          fileapi::kFileSystemTypeTemporary);
+     context->GetQuotaUtil(fileapi::kFileSystemTypeTemporary);
 
   GURL current;
 
   while (!(current = origin_enumerator->Next()).is_empty()) {
     if (!BrowsingDataHelper::HasValidScheme(current))
       continue; // Non-websafe state is not considered browsing data.
 
     // We can call these synchronous methods as we've already verified that
     // we're running on the FILE thread.
-    int64 persistent_usage = quota_util->GetOriginUsageOnFileThread(current,
+    int64 persistent_usage = quota_util->GetOriginUsageOnFileThread(
+        context, current,
         fileapi::kFileSystemTypePersistent);
-    int64 temporary_usage = quota_util->GetOriginUsageOnFileThread(current,
+    int64 temporary_usage = quota_util->GetOriginUsageOnFileThread(
+        context, current,
         fileapi::kFileSystemTypeTemporary);
     file_system_info_.push_back(
         FileSystemInfo(
             current,
             origin_enumerator->HasFileSystemType(
                 fileapi::kFileSystemTypePersistent),
             origin_enumerator->HasFileSystemType(
                 fileapi::kFileSystemTypeTemporary),
             persistent_usage,
             temporary_usage));
@@ skipping 128 matching lines @@
       base::Bind(&CannedBrowsingDataFileSystemHelper::NotifyOnUIThread, this));
 }
 
 void CannedBrowsingDataFileSystemHelper::NotifyOnUIThread() {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   DCHECK(is_fetching_);
   completion_callback_.Run(file_system_info_);
   completion_callback_.Reset();
   is_fetching_ = false;
 }