Relanding: 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 9cb420ff629a86b949e929064e4223677b39778a..9c87e570661c746f1edcf2e30dc72bc0aa969060 100644
--- a/content/common/resource_request_body.h
+++ b/content/common/resource_request_body.h
@@ -22,8 +22,6 @@ class FilePath;
 
 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
@@ -34,8 +32,6 @@ class CONTENT_EXPORT ResourceRequestBody
 
   ResourceRequestBody();
 
-  void AppendExplodedHTTPBodyElement(const ExplodedHttpBodyElement& element);
-
   void AppendBytes(const char* bytes, int bytes_len);
   void AppendFileRange(const base::FilePath& file_path,
                        uint64_t offset,