Create blobs from Disk Cache entries.

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 8119538c07e10ffe2903eea690c4720f1ad269e5..aac58a57a1f8b9141f98ec349c82b6e43a659452 100644
--- a/storage/browser/blob/blob_data_builder.h
+++ b/storage/browser/blob/blob_data_builder.h
@@ -12,6 +12,7 @@
 #include "base/basictypes.h"
 #include "base/files/file_path.h"
 #include "base/memory/ref_counted.h"
+#include "net/disk_cache/disk_cache.h"
 #include "storage/browser/blob/blob_data_item.h"
 #include "storage/browser/blob/blob_data_snapshot.h"
 #include "storage/browser/storage_browser_export.h"
@@ -21,6 +22,8 @@ class BlobStorageContext;
 
 class STORAGE_EXPORT BlobDataBuilder {
  public:
+  class ExtraData : public BlobDataItem::ExtraData {};
+
   explicit BlobDataBuilder(const std::string& uuid);
   ~BlobDataBuilder();
 
@@ -49,6 +52,10 @@ class STORAGE_EXPORT BlobDataBuilder {
                             uint64_t length,
                             const base::Time& expected_modification_time);
 
+  void AppendDiskCacheEntry(disk_cache::ScopedEntryPtr entry,
+                            int index,
+                            scoped_ptr<ExtraData> extra_data);
+
   void set_content_type(const std::string& content_type) {
     content_type_ = content_type;
   }