Make workers inherit the large heap limit of the main isolate.

third_party/WebKit/Source/web/WebSharedWorkerImpl.cpp

 /*
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 384 matching lines @@
   std::unique_ptr<WorkerSettings> workerSettings =
       WTF::wrapUnique(new WorkerSettings(document->settings()));
   std::unique_ptr<WorkerThreadStartupData> startupData =
       WorkerThreadStartupData::create(
           m_url, m_loadingDocument->userAgent(), m_mainScriptLoader->script(),
           nullptr, startMode,
           contentSecurityPolicy ? contentSecurityPolicy->headers().get()
                                 : nullptr,
           m_mainScriptLoader->getReferrerPolicy(), starterOrigin, workerClients,
           m_mainScriptLoader->responseAddressSpace(),
-          m_mainScriptLoader->originTrialTokens(), std::move(workerSettings));
+          m_mainScriptLoader->originTrialTokens(), std::move(workerSettings),
+          WorkerV8Settings::Default());
 
   // SharedWorker can sometimes run tasks that are initiated by/associated with
   // a document's frame but these documents can be from a different process. So
   // we intentionally populate the task runners with null document in order to
   // use the thread's default task runner. Note that |m_document| should not be
   // used as it's a dummy document for loading that doesn't represent the frame
   // of any associated document.
   m_parentFrameTaskRunners = ParentFrameTaskRunners::create(nullptr);
 
   m_loaderProxy = WorkerLoaderProxy::create(this);
@@ skipping 49 matching lines @@
   if (devtoolsAgent)
     devtoolsAgent->dispatchOnInspectorBackend(sessionId, callId, method,
                                               message);
 }
 
 WebSharedWorker* WebSharedWorker::create(WebSharedWorkerClient* client) {
   return new WebSharedWorkerImpl(client);
 }
 
 }  // namespace blink