[Fetch API] Reflect spec changes of bodyUsed property

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/ScriptWrappable.h"
 #include "core/dom/ActiveDOMObject.h"
@@ skipping 17 matching lines @@
     WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(Body);
 public:
     explicit Body(ExecutionContext*);
     ~Body() override { }
 
     ScriptPromise arrayBuffer(ScriptState*);
     ScriptPromise blob(ScriptState*);
     ScriptPromise formData(ScriptState*);
     ScriptPromise json(ScriptState*);
     ScriptPromise text(ScriptState*);
-    ReadableByteStream* body();
+    ReadableByteStream* bodyWithUseCounter();
     virtual BodyStreamBuffer* bodyBuffer() = 0;
     virtual const BodyStreamBuffer* bodyBuffer() const = 0;
 
-    bool bodyUsed();
-    void setBodyPassed() { m_bodyPassed = true; }
+    virtual bool bodyUsed();
+    bool isBodyLocked();
 
     // ActiveDOMObject override.
     bool hasPendingActivity() const override;
 
     DEFINE_INLINE_VIRTUAL_TRACE()
     {
         ActiveDOMObject::trace(visitor);
     }
 
 private:
+    ReadableByteStream* body();
     virtual String mimeType() const = 0;
 
-    bool m_bodyPassed;
+    bool m_opaque;
 };
 
 } // namespace blink
 
 #endif // Body_h