New blobstoragecontext for use in the main browser process, not plugged in yet.

webkit/base/data_element.cc

Index: webkit/base/data_element.cc
===================================================================
--- webkit/base/data_element.cc	(revision 197440)
+++ webkit/base/data_element.cc	(working copy)
@@ -30,17 +30,28 @@
     const GURL& blob_url,
     uint64 offset, uint64 length) {
   type_ = TYPE_BLOB;
-  url_ = blob_url;
+  blob_url_ = blob_url;
   offset_ = offset;
   length_ = length;
+  blob_uuid_.clear();
 }
 
+void DataElement::SetToBlobRange(
+    const std::string& blob_uuid,
+    uint64 offset, uint64 length) {
+  type_ = TYPE_BLOB;
+  blob_uuid_ = blob_uuid;
+  offset_ = offset;
+  length_ = length;
+  blob_url_ = GURL();
+}
+
 void DataElement::SetToFileSystemUrlRange(
     const GURL& filesystem_url,
     uint64 offset, uint64 length,
     const base::Time& expected_modification_time) {
   type_ = TYPE_FILE_FILESYSTEM;
-  url_ = filesystem_url;
+  filesystem_url_ = filesystem_url;
   offset_ = offset;
   length_ = length;
   expected_modification_time_ = expected_modification_time;