BodyStreamBuffer shouldn't run scripts when ActiveDOMObjects are stopped

third_party/WebKit/Source/modules/fetch/BodyStreamBuffer.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/BodyStreamBuffer.h"
 
 #include "bindings/core/v8/ScriptState.h"
 #include "bindings/core/v8/V8HiddenValue.h"
 #include "bindings/core/v8/WorkerOrWorkletScriptController.h"
 #include "core/dom/DOMArrayBuffer.h"
@@ skipping 256 matching lines @@
 
 ScriptPromise BodyStreamBuffer::cancel(ScriptState* scriptState, ScriptValue reason)
 {
     ASSERT(scriptState == m_scriptState.get());
     close();
     return ScriptPromise::castUndefined(scriptState);
 }
 
 void BodyStreamBuffer::didGetReadable()
 {
-    if (!m_reader)
+    if (!m_reader || !getExecutionContext() || getExecutionContext()->activeDOMObjectsAreStopped())
         return;
 
     if (!m_streamNeedsMore) {
         // Perform zero-length read to call close()/error() early.
         size_t readSize;
         WebDataConsumerHandle::Result result = m_reader->read(nullptr, 0, WebDataConsumerHandle::FlagNone, &readSize);
         switch (result) {
         case WebDataConsumerHandle::Ok:
         case WebDataConsumerHandle::ShouldWait:
             return;
@@ skipping 192 matching lines @@
         return createFetchDataConsumerHandleFromWebHandle(createDoneDataConsumerHandle());
     }
     if (isErrored)
         return createFetchDataConsumerHandleFromWebHandle(createUnexpectedErrorDataConsumerHandle());
 
     DCHECK(handle);
     return handle;
 }
 
 } // namespace blink