[Fetch API] Implement Request.formData and Response.formData.

third_party/WebKit/Source/modules/fetch/Request.cpp

 // Copyright 2014 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 "modules/fetch/Request.h"
 
 #include "bindings/core/v8/Dictionary.h"
 #include "core/dom/Document.h"
 #include "core/dom/ExecutionContext.h"
 #include "core/loader/ThreadableLoader.h"
@@ skipping 734 matching lines @@
       static_cast<WebReferrerPolicy>(request_->GetReferrerPolicy()));
   // FIXME: How can we set isReload properly? What is the correct place to load
   // it in to the Request object? We should investigate the right way to plumb
   // this information in to here.
 }
 
 String Request::MimeType() const {
   return request_->MimeType();
 }
 
+String Request::ContentType() const {
+  String result;
+  request_->HeaderList()->Get(HTTPNames::Content_Type, result);
+  return result;
+}
+
 void Request::RefreshBody(ScriptState* script_state) {
   v8::Local<v8::Value> request = ToV8(this, script_state);
   if (request.IsEmpty()) {
     // |toV8| can return an empty handle when the worker is terminating.
     // We don't want the renderer to crash in such cases.
     // TODO(yhirano): Delete this block after the graceful shutdown
     // mechanism is introduced.
     return;
   }
   DCHECK(request->IsObject());
   v8::Local<v8::Value> body_buffer = ToV8(this->BodyBuffer(), script_state);
   V8PrivateProperty::GetInternalBodyBuffer(script_state->GetIsolate())
       .Set(request.As<v8::Object>(), body_buffer);
 }
 
 DEFINE_TRACE(Request) {
   Body::Trace(visitor);
   visitor->Trace(request_);
   visitor->Trace(headers_);
 }
 
 }  // namespace blink