Cleanup deprecated and no longer needed blob revamp stuff, deadcode.

content/child/fileapi/webfilewriter_base.cc

Index: content/child/fileapi/webfilewriter_base.cc
diff --git a/content/child/fileapi/webfilewriter_base.cc b/content/child/fileapi/webfilewriter_base.cc
index 705f211cc8304beab4f0426f590a9055297fcbdd..5a97b579a88a3d4fe4a8afebacbb62518d50f5da 100644
--- a/content/child/fileapi/webfilewriter_base.cc
+++ b/content/child/fileapi/webfilewriter_base.cc
@@ -30,14 +30,6 @@ void WebFileWriterBase::truncate(long long length) {
   DoTruncate(path_, length);
 }
 
-void WebFileWriterBase::write(long long position,
-                              const WebKit::WebURL& blob_url) {
-  DCHECK_EQ(kOperationNone, operation_);
-  DCHECK_EQ(kCancelNotInProgress, cancel_state_);
-  operation_ = kOperationWrite;
-  DoWriteDeprecated(path_, blob_url, position);
-}
-
 void WebFileWriterBase::write(
       long long position,
       const WebKit::WebString& id) {