Allow no content-type for POST, PUT and PATCH methods.

net/url_request/url_fetcher.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef NET_URL_REQUEST_URL_FETCHER_H_
 #define NET_URL_REQUEST_URL_FETCHER_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 65 matching lines @@
 
   enum RequestType {
     GET,
     POST,
     HEAD,
     DELETE_REQUEST,   // DELETE is already taken on Windows.
                       // <winnt.h> defines a DELETE macro.
     PUT,
     PATCH,
 
-    // This is POST method with no body, no content-type header and
-    // no content-length header.
+    // DEPRECATED: Now POST should work well for empty body, and this value
+    //   will be removed soon.
+    // This is POST method with no body, and no content-type header.
     POST_WITHOUT_BODY,
   };
 
   // Used by SetURLRequestUserData.  The callback should make a fresh
   // base::SupportsUserData::Data object every time it's called.
   typedef base::Callback<base::SupportsUserData::Data*()> CreateDataCallback;
 
   virtual ~URLFetcher();
 
   // |url| is the URL to send the request to.
@@ skipping 183 matching lines @@
 
   // Get the response as a string. Return false if the fetcher was not
   // set to store the response as a string.
   virtual bool GetResponseAsString(std::string* out_response_string) const = 0;
 
   // Get the path to the file containing the response body. Returns false
   // if the response body was not saved to a file. If take_ownership is
   // true, caller takes responsibility for the file, and it will not
   // be removed once the URLFetcher is destroyed.  User should not take
   // ownership more than once, or call this method after taking ownership.
-  virtual bool GetResponseAsFilePath(bool take_ownership,
-                                     base::FilePath* out_response_path) const = 0;
+  virtual bool GetResponseAsFilePath(
+      bool take_ownership,
+      base::FilePath* out_response_path) const = 0;
 };
 
 }  // namespace net
 
 #endif  // NET_URL_REQUEST_URL_FETCHER_H_