[Blob] Blob paging to disk patch.

storage/browser/blob/blob_data_builder.h

Index: storage/browser/blob/blob_data_builder.h
diff --git a/storage/browser/blob/blob_data_builder.h b/storage/browser/blob/blob_data_builder.h
index f075c2161f96b37a20b90723c2288bab0e8f780f..4d2e217bab3b3811433bbc0d8f9e511fdb98958c 100644
--- a/storage/browser/blob/blob_data_builder.h
+++ b/storage/browser/blob/blob_data_builder.h
@@ -15,8 +15,13 @@
 #include "base/memory/ref_counted.h"
 #include "storage/browser/blob/blob_data_item.h"
 #include "storage/browser/blob/blob_data_snapshot.h"
+#include "storage/browser/blob/shareable_file_reference.h"
 #include "storage/browser/storage_browser_export.h"
 
+namespace base {
+class TaskRunner;
+}
+
 namespace disk_cache {
 class Entry;
 }
@@ -93,6 +98,14 @@ class STORAGE_EXPORT BlobDataBuilder {
                   uint64_t length,
                   const base::Time& expected_modification_time);
 
+  // You must know the length of the file, you cannot use kuint64max to specify
+  // the whole file.
+  void AppendShareableFileReference(
+      const scoped_refptr<ShareableFileReference> file,
+      uint64_t offset,
+      uint64_t length,
+      const base::Time& expected_modification_time);
+
   void AppendBlob(const std::string& uuid, uint64_t offset, uint64_t length);
 
   void AppendBlob(const std::string& uuid);