[Fetch API] Reflect spec changes of bodyUsed property

third_party/WebKit/Source/core/streams/ReadableStream.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 "config.h"
 #include "core/streams/ReadableStream.h"
 
 #include "bindings/core/v8/ExceptionState.h"
 #include "bindings/core/v8/ScriptFunction.h"
 #include "bindings/core/v8/ScriptPromiseResolver.h"
@@ skipping 93 matching lines @@
     if (m_state == Closed)
         return ScriptPromise::cast(scriptState, v8::Undefined(scriptState->isolate()));
     if (m_state == Errored)
         return ScriptPromise::rejectWithDOMException(scriptState, m_exception);
 
     return cancelInternal(scriptState, reason);
 }
 
 ScriptPromise ReadableStream::cancelInternal(ScriptState* scriptState, ScriptValue reason)
 {
+    setIsDisturbed();
     closeInternal();
     return m_source->cancelSource(scriptState, reason).then(ConstUndefined::create(scriptState));
 }
 
 void ReadableStream::error(DOMException* exception)
 {
     if (m_state != ReadableStream::Readable)
         return;
 
     m_exception = exception;
     clearQueue();
     rejectAllPendingReads(m_exception);
     m_state = Errored;
     if (m_reader)
-        m_reader->releaseLock();
+        m_reader->error();
 }
 
 void ReadableStream::didSourceStart()
 {
     m_isStarted = true;
     callPullIfNeeded();
 }
 
 ReadableStreamReader* ReadableStream::getReader(ExecutionContext* executionContext, ExceptionState& exceptionState)
 {
@@ skipping 33 matching lines @@
     m_source->pullSource();
 }
 
 void ReadableStream::closeInternal()
 {
     ASSERT(m_state == Readable);
     m_state = Closed;
     resolveAllPendingReadsAsDone();
     clearQueue();
     if (m_reader)
-        m_reader->releaseLock();
+        m_reader->close();
 }
 
 DEFINE_TRACE(ReadableStream)
 {
     visitor->trace(m_source);
     visitor->trace(m_exception);
     visitor->trace(m_reader);
 }
 
 } // namespace blink