Chromium Blob hacking

content/child/fileapi/webfilewriter_base.h

Index: content/child/fileapi/webfilewriter_base.h
diff --git a/content/child/fileapi/webfilewriter_base.h b/content/child/fileapi/webfilewriter_base.h
index d3873dc1fb6fb2bc15de94e17c9bb3af7705d018..887b57d011323003d2c26fd295bf483c132a9f26 100644
--- a/content/child/fileapi/webfilewriter_base.h
+++ b/content/child/fileapi/webfilewriter_base.h
@@ -25,9 +25,12 @@ class CONTENT_EXPORT WebFileWriterBase
 
   // WebFileWriter implementation
   virtual void truncate(long long length);
-  virtual void write(long long position, const WebKit::WebURL& blobURL);
+  virtual void write(long long position, const WebKit::WebString& id);
   virtual void cancel();
 
+  // DEPRECATED: see crbug/174200
+  virtual void write(long long position, const WebKit::WebURL& blobURL);
+
  protected:
   // This calls DidSucceed() or DidFail() based on the value of |error_code|.
   void DidFinish(base::PlatformFileError error_code);
@@ -40,9 +43,12 @@ class CONTENT_EXPORT WebFileWriterBase
   // the requested operation, and they must call the appropiate DidSomething
   // method upon completion and as progress is made in the Write case.
   virtual void DoTruncate(const GURL& path, int64 offset) = 0;
-  virtual void DoWrite(const GURL& path,
+  virtual void DoWriteDeprecated(const GURL& path,
                        const GURL& blob_url,
                        int64 offset) = 0;
+  virtual void DoWrite(const GURL& path,
+                       const std::string& blob_id,
+                       int64 offset) = 0;
   virtual void DoCancel() = 0;
 
  private: