Break large blobs into multiple ipcs during creation.

webkit/blob/blob_storage_controller.h

Index: webkit/blob/blob_storage_controller.h
===================================================================
--- webkit/blob/blob_storage_controller.h	(revision 102191)
+++ webkit/blob/blob_storage_controller.h	(working copy)
@@ -8,6 +8,7 @@
 #include "base/hash_tables.h"
 #include "base/memory/ref_counted.h"
 #include "base/process.h"
+#include "webkit/blob/blob_data.h"
 
 class GURL;
 class FilePath;
@@ -21,15 +22,15 @@
 
 namespace webkit_blob {
 
-class BlobData;
-
 // This class handles the logistics of blob Storage within the browser process.
 class BlobStorageController {
  public:
   BlobStorageController();
   ~BlobStorageController();
 
-  void RegisterBlobUrl(const GURL& url, const BlobData* blob_data);
+  void RegisterUnfinalizedBlobUrl(const GURL& url);
+  void AppendBlobDataItem(const GURL& url, const BlobData::Item& data_item);
+  void FinalizeBlob(const GURL& url, const std::string& content_type);
   void RegisterBlobUrlFrom(const GURL& url, const GURL& src_url);
   void UnregisterBlobUrl(const GURL& url);
   BlobData* GetBlobDataFromUrl(const GURL& url);
@@ -51,6 +52,7 @@
 
   typedef base::hash_map<std::string, scoped_refptr<BlobData> > BlobMap;
   BlobMap blob_map_;
+  BlobMap unfinalized_blob_map_;
 
   DISALLOW_COPY_AND_ASSIGN(BlobStorageController);
 };