Add the IndexedDBActiveBlobRegistry, currently unused, to enable future blob

content/browser/indexed_db/indexed_db_fake_backing_store.h

Index: content/browser/indexed_db/indexed_db_fake_backing_store.h
diff --git a/content/browser/indexed_db/indexed_db_fake_backing_store.h b/content/browser/indexed_db/indexed_db_fake_backing_store.h
index 113a0567093f212338b0f5832f646aaa4ebfdaf3..f4f67d7ae54bf6700a01a25e1b812f5a71fbe1f0 100644
--- a/content/browser/indexed_db/indexed_db_fake_backing_store.h
+++ b/content/browser/indexed_db/indexed_db_fake_backing_store.h
@@ -9,14 +9,19 @@
 
 #include "content/browser/indexed_db/indexed_db_backing_store.h"
 
+namespace base {
+class TaskRunner;
+}
+
 namespace content {
 
+class IndexedDBFactory;
+
 class IndexedDBFakeBackingStore : public IndexedDBBackingStore {
  public:
-  IndexedDBFakeBackingStore()
-      : IndexedDBBackingStore(GURL("http://localhost:81"),
-                              scoped_ptr<LevelDBDatabase>(),
-                              scoped_ptr<LevelDBComparator>()) {}
+  IndexedDBFakeBackingStore();
+  IndexedDBFakeBackingStore(IndexedDBFactory* factory,
+                            base::TaskRunner* task_runner);
   virtual std::vector<base::string16> GetDatabaseNames() OVERRIDE;
   virtual leveldb::Status GetIDBDatabaseMetaData(const base::string16& name,
                                                  IndexedDBDatabaseMetadata*,
@@ -83,6 +88,7 @@ class IndexedDBFakeBackingStore : public IndexedDBBackingStore {
                                                 const IndexedDBKey&,
                                                 const RecordIdentifier&)
       OVERRIDE;
+  virtual void ReportBlobUnused(int64 database_id, int64 blob_key) OVERRIDE;
 
   virtual scoped_ptr<Cursor> OpenObjectStoreKeyCursor(
       Transaction* transaction,