Enable Oilpan per thread heap on CompositorWorker

third_party/WebKit/Source/core/workers/WorkerBackingThread.cpp

 // Copyright 2016 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 "core/workers/WorkerBackingThread.h"
 
 #include "bindings/core/v8/V8Binding.h"
 #include "bindings/core/v8/V8GCController.h"
 #include "bindings/core/v8/V8IdleTaskRunner.h"
 #include "bindings/core/v8/V8Initializer.h"
@@ skipping 37 matching lines @@
 }
 
 WorkerBackingThread::WorkerBackingThread(const char* name, bool shouldCallGCOnShutdown)
     : m_backingThread(WebThreadSupportingGC::create(name))
     , m_isOwningThread(true)
     , m_shouldCallGCOnShutdown(shouldCallGCOnShutdown)
 {
 }
 
 WorkerBackingThread::WorkerBackingThread(WebThread* thread, bool shouldCallGCOnShutdown)
-    : m_backingThread(WebThreadSupportingGC::createForThread(thread))
+    : m_backingThread(WebThreadSupportingGC::createForThread(thread, true))
     , m_isOwningThread(false)
     , m_shouldCallGCOnShutdown(shouldCallGCOnShutdown)
 {
 }
 
 WorkerBackingThread::~WorkerBackingThread()
 {
 }
 
 void WorkerBackingThread::initialize()
@@ skipping 46 matching lines @@
 // static
 void WorkerBackingThread::setRAILModeOnWorkerThreadIsolates(
     v8::RAILMode railMode)
 {
     MutexLocker lock(isolatesMutex());
     for (v8::Isolate* isolate : isolates())
         isolate->SetRAILMode(railMode);
 }
 
 } // namespace blink