Revert of Deduplicating code performing WebHTTPBody::Element conversions.

content/common/resource_request_body.h

Index: content/common/resource_request_body.h
diff --git a/content/common/resource_request_body.h b/content/common/resource_request_body.h
index 9c87e570661c746f1edcf2e30dc72bc0aa969060..9cb420ff629a86b949e929064e4223677b39778a 100644
--- a/content/common/resource_request_body.h
+++ b/content/common/resource_request_body.h
@@ -22,6 +22,8 @@
 
 namespace content {
 
+struct ExplodedHttpBodyElement;
+
 // A struct used to represent upload data. The data field is populated by
 // WebURLLoader from the data given as WebHTTPBody.
 class CONTENT_EXPORT ResourceRequestBody
@@ -31,6 +33,8 @@
   typedef storage::DataElement Element;
 
   ResourceRequestBody();
+
+  void AppendExplodedHTTPBodyElement(const ExplodedHttpBodyElement& element);
 
   void AppendBytes(const char* bytes, int bytes_len);
   void AppendFileRange(const base::FilePath& file_path,