Make FileSystemContext respect StoragePartitions. filesystem:// urls will be properly isolated

chrome/browser/extensions/api/downloads/downloads_api_unittest.cc

Index: chrome/browser/extensions/api/downloads/downloads_api_unittest.cc
diff --git a/chrome/browser/extensions/api/downloads/downloads_api_unittest.cc b/chrome/browser/extensions/api/downloads/downloads_api_unittest.cc
index bad27f0cae09729c40c32bd2341b82785201149d..aee109d01d66141190dda8bca307f956f1e6c4c0 100644
--- a/chrome/browser/extensions/api/downloads/downloads_api_unittest.cc
+++ b/chrome/browser/extensions/api/downloads/downloads_api_unittest.cc
@@ -35,6 +35,7 @@
 #include "content/public/browser/download_manager.h"
 #include "content/public/browser/download_persistent_store_info.h"
 #include "content/public/browser/notification_service.h"
+#include "content/public/browser/storage_partition.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/common/page_transition_types.h"
 #include "content/public/test/download_test_observer.h"
@@ -680,7 +681,8 @@ class HTML5FileWriter {
       events_listener_(events_listener),
       blob_data_(new webkit_blob::BlobData()),
       payload_(payload),
-      fs_(BrowserContext::GetFileSystemContext(profile_)) {
+      fs_(BrowserContext::GetDefaultStoragePartition(profile_)->
+          GetFileSystemContext()) {
     CHECK(profile_);
     CHECK(events_listener_);
     CHECK(fs_);