Always pass FileSystemContext to ObfuscatedFileUtil operations

chrome/browser/browsing_data_file_system_helper.cc

Index: chrome/browser/browsing_data_file_system_helper.cc
diff --git a/chrome/browser/browsing_data_file_system_helper.cc b/chrome/browser/browsing_data_file_system_helper.cc
index 467601ce5db179ce61386c2fd72c47154015bdb6..587dac2e89e50ebccafaf0357db23196afc377ca 100644
--- a/chrome/browser/browsing_data_file_system_helper.cc
+++ b/chrome/browser/browsing_data_file_system_helper.cc
@@ -116,11 +116,13 @@ void BrowsingDataFileSystemHelperImpl::FetchFileSystemInfoInFileThread() {
       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;
 
@@ -130,9 +132,11 @@ void BrowsingDataFileSystemHelperImpl::FetchFileSystemInfoInFileThread() {
 
     // 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(