Support 'URLSearchParams' as the body of a Request

third_party/WebKit/Source/core/dom/URLSearchParams.cpp

 // Copyright 2015 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.
 
 #include "config.h"
 #include "core/dom/URLSearchParams.h"
 
+#include "platform/network/FormDataEncoder.h"
 #include "platform/weborigin/KURL.h"
 #include "wtf/text/StringBuilder.h"
 #include "wtf/text/TextEncoding.h"
 
 namespace blink {
 
 namespace {
 
 class URLSearchParamsIterationSource final : public PairIterable<String, String>::IterationSource {
 public:
@@ skipping 151 matching lines @@
             }
         } else {
             i++;
         }
     }
     // Otherwise, append a new name-value pair to the list.
     if (!foundMatch)
         append(name, value);
 }
 
+PassRefPtr<EncodedFormData> URLSearchParams::encodeFormData() const
+{
+    RefPtr<EncodedFormData> data = EncodedFormData::create();
+    Vector<char> encodedData;
+    for (const auto& param : m_params)
+        FormDataEncoder::addKeyValuePairAsFormData(encodedData, param.first.utf8(), param.second.utf8(), EncodedFormData::FormURLEncoded);
+    data->appendData(encodedData.data(), encodedData.size());
+    return data.release();
+}
+
 DEFINE_TRACE(URLSearchParams)
 {
 }
 
 PairIterable<String, String>::IterationSource* URLSearchParams::startIteration(ScriptState*, ExceptionState&)
 {
     return new URLSearchParamsIterationSource(m_params);
 }
 
 } // namespace blink