[Storage] Blob Storage Refactoring pt 1

storage/browser/blob/blob_url_request_job.h

Index: storage/browser/blob/blob_url_request_job.h
diff --git a/storage/browser/blob/blob_url_request_job.h b/storage/browser/blob/blob_url_request_job.h
index dab61dc7759d124478715f8ce78cbcc0a72258c4..805c52627b010d72cecf9518e271c2b262ba4ab5 100644
--- a/storage/browser/blob/blob_url_request_job.h
+++ b/storage/browser/blob/blob_url_request_job.h
@@ -38,7 +38,7 @@ class STORAGE_EXPORT BlobURLRequestJob
  public:
   BlobURLRequestJob(net::URLRequest* request,
                     net::NetworkDelegate* network_delegate,
-                    const scoped_refptr<BlobData>& blob_data,
+                    const BlobDataSnapshot* blob_data,
                     storage::FileSystemContext* file_system_context,
                     base::MessageLoopProxy* resolving_message_loop_proxy);
 
@@ -70,7 +70,7 @@ class STORAGE_EXPORT BlobURLRequestJob
   bool ReadItem();
   void AdvanceItem();
   void AdvanceBytesRead(int result);
-  bool ReadBytesItem(const BlobData::Item& item, int bytes_to_read);
+  bool ReadBytesItem(const BlobDataItem& item, int bytes_to_read);
   bool ReadFileItem(FileStreamReader* reader, int bytes_to_read);
 
   void DidReadFile(int result);
@@ -92,7 +92,8 @@ class STORAGE_EXPORT BlobURLRequestJob
   // Creates a FileStreamReader for the item at |index| with additional_offset.
   void CreateFileStreamReader(size_t index, int64 additional_offset);
 
-  scoped_refptr<BlobData> blob_data_;
+  // Owned by the URL Request.
+  const BlobDataSnapshot* blob_data_;
 
   // Variables for controlling read from |blob_data_|.
   scoped_refptr<storage::FileSystemContext> file_system_context_;