********** Chromium Blob hacking

content/browser/fileapi/fileapi_message_filter.h

Index: content/browser/fileapi/fileapi_message_filter.h
===================================================================
--- content/browser/fileapi/fileapi_message_filter.h	(revision 171309)
+++ content/browser/fileapi/fileapi_message_filter.h	(working copy)
@@ -5,12 +5,11 @@
 #ifndef CONTENT_BROWSER_FILEAPI_FILEAPI_MESSAGE_FILTER_H_
 #define CONTENT_BROWSER_FILEAPI_FILEAPI_MESSAGE_FILTER_H_
 
-#include <set>
+#include <map>
 #include <string>
 
 #include "base/callback.h"
 #include "base/file_util_proxy.h"
-#include "base/hash_tables.h"
 #include "base/id_map.h"
 #include "base/platform_file.h"
 #include "base/shared_memory.h"
@@ -37,6 +36,7 @@
 }  // namespace net
 
 namespace webkit_blob {
+class BlobStorageConsumer;
 class ShareableFileReference;
 }
 
@@ -100,7 +100,7 @@
   void OnReadDirectory(int request_id, const GURL& path);
   void OnWrite(int request_id,
                const GURL& path,
-               const GURL& blob_url,
+               const std::string& blob_uuid,
                int64 offset);
   void OnTruncate(int request_id, const GURL& path, int64 length);
   void OnTouchFile(int request_id,
@@ -115,18 +115,22 @@
   void OnSyncGetPlatformPath(const GURL& path,
                              FilePath* platform_path);
   void OnCreateSnapshotFile(int request_id,
-                            const GURL& blob_url,
                             const GURL& path);
+  void OnDidReceiveSnapshotFile(int request_id);
+  void OnStartBuildingBlob2(const std::string& uuid);
+  void OnAppendBlobDataItem2(const std::string& uuid,
+                             const webkit_blob::BlobData::Item& item);
+  void OnAppendSharedMemory2(const std::string& uuid,
+                             base::SharedMemoryHandle handle,
+                             size_t buffer_size);
+  void OnFinishBuildingBlob2(const std::string& uuid,
+                             const std::string& content_type);
+  void OnCancelBuildingBlob(const std::string& uuid);
+  void OnIncrementBlobRefCount(const std::string& uuid);
+  void OnDecrementBlobRefCount(const std::string& uuid);
+  void OnRegisterPublicBlobURL(const GURL& public_url, const std::string& uuid);
+  void OnRevokePublicBlobURL(const GURL& public_url);
 
-  void OnStartBuildingBlob(const GURL& url);
-  void OnAppendBlobDataItem(const GURL& url,
-                            const webkit_blob::BlobData::Item& item);
-  void OnAppendSharedMemory(const GURL& url, base::SharedMemoryHandle handle,
-                            size_t buffer_size);
-  void OnFinishBuildingBlob(const GURL& url, const std::string& content_type);
-  void OnCloneBlob(const GURL& url, const GURL& src_url);
-  void OnRemoveBlob(const GURL& url);
-
   // Callback functions to be used when each file operation is finished.
   void DidFinish(int request_id, base::PlatformFileError result);
   void DidCancel(int request_id, base::PlatformFileError result);
@@ -154,19 +158,13 @@
   void DidDeleteFileSystem(int request_id,
                            base::PlatformFileError result);
   void DidCreateSnapshot(
+      const fileapi::FileSystemURL& url,
       int request_id,
-      const base::Callback<void(const FilePath&)>& register_file_callback,
       base::PlatformFileError result,
       const base::PlatformFileInfo& info,
       const FilePath& platform_path,
       const scoped_refptr<webkit_blob::ShareableFileReference>& file_ref);
 
-  // Registers the given file pointed by |virtual_path| and backed by
-  // |platform_path| as the |blob_url|.  Called by DidCreateSnapshot.
-  void RegisterFileAsBlob(const GURL& blob_url,
-                          const fileapi::FileSystemURL& url,
-                          const FilePath& platform_path);
-
   // Checks renderer's access permissions for single file.
   bool HasPermissionsForFile(const fileapi::FileSystemURL& url,
                              int permissions,
@@ -192,10 +190,15 @@
 
   scoped_refptr<ChromeBlobStorageContext> blob_storage_context_;
 
-  // Keep track of blob URLs registered in this process. Need to unregister
-  // all of them when the renderer process dies.
-  base::hash_set<std::string> blob_urls_;
+  // Keep track of blobs utilized in this process and cleans up
+  // accordingly when the renderer process dies.
+  scoped_ptr<webkit_blob::BlobStorageConsumer> blob_storage_consumer_;
 
+  // Used to keep snapshot files alive while a DidCreateSnapshot
+  // is being sent to the renderer.
+  std::map<int, scoped_refptr<webkit_blob::ShareableFileReference> >
+      in_transit_snapshot_files_;
+
   // Keep track of file system file URLs opened by OpenFile() in this process.
   // Need to close all of them when the renderer process dies.
   std::multiset<GURL> open_filesystem_urls_;