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

third_party/WebKit/Source/modules/fetch/Body.h

 // 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.
 
 #ifndef Body_h
 #define Body_h
 
 #include "bindings/core/v8/ScriptPromise.h"
 #include "bindings/core/v8/ScriptValue.h"
 #include "core/dom/ContextLifecycleObserver.h"
@@ skipping 22 matching lines @@
                             public ContextClient {
   WTF_MAKE_NONCOPYABLE(Body);
   DEFINE_WRAPPERTYPEINFO();
   USING_GARBAGE_COLLECTED_MIXIN(Body);
 
  public:
   explicit Body(ExecutionContext*);
 
   ScriptPromise arrayBuffer(ScriptState*);
   ScriptPromise blob(ScriptState*);
-  ScriptPromise FormData(ScriptState*);
+  ScriptPromise formData(ScriptState*);
   ScriptPromise json(ScriptState*);
   ScriptPromise text(ScriptState*);
   ScriptValue body(ScriptState*);
   virtual BodyStreamBuffer* BodyBuffer() = 0;
   virtual const BodyStreamBuffer* BodyBuffer() const = 0;
 
   virtual bool bodyUsed();
   bool IsBodyLocked();
 
   // ScriptWrappable override.
   bool HasPendingActivity() const override;
 
   DEFINE_INLINE_VIRTUAL_TRACE() { ContextClient::Trace(visitor); }
 
  private:
+  // TODO(e_hakkinen): Fix |MimeType()| to always contain parameters and
+  // remove |ContentType()|.
+  virtual String ContentType() const = 0;
   virtual String MimeType() const = 0;
 
   // Body consumption algorithms will reject with a TypeError in a number of
   // error conditions. This method wraps those up into one call which returns
   // an empty ScriptPromise if the consumption may proceed, and a
   // ScriptPromise rejected with a TypeError if it ought to be blocked.
   ScriptPromise RejectInvalidConsumption(ScriptState*);
 };
 
 }  // namespace blink
 
 #endif  // Body_h