Refactor the Heap into ThreadHeap to prepare for per thread heaps

third_party/WebKit/Source/core/dom/FrameRequestCallbackCollection.cpp

 // Copyright 2015 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/dom/FrameRequestCallbackCollection.h"
 
 #include "core/dom/FrameRequestCallback.h"
 #include "core/inspector/InspectorInstrumentation.h"
 #include "core/inspector/InspectorTraceEvents.h"
 
 namespace blink {
 
 FrameRequestCallbackCollection::FrameRequestCallbackCollection(ExecutionContext* context)
     : m_context(context)
 {
+#if ENABLE(OILPAN)
+    ASSERT(ThreadState::forObject(m_context.get()) == ThreadState::current());
+#endif
 }
 
 FrameRequestCallbackCollection::CallbackId FrameRequestCallbackCollection::registerCallback(FrameRequestCallback* callback)
 {
+    ASSERT(ThreadState::forObject(callback) == ThreadState::current());

[haraken, 2016/01/07 08:06:21]

Is this useful?

     FrameRequestCallbackCollection::CallbackId id = ++m_nextCallbackId;
     callback->m_cancelled = false;
     callback->m_id = id;
     m_callbacks.append(callback);
 
     TRACE_EVENT_INSTANT1("devtools.timeline", "RequestAnimationFrame", TRACE_EVENT_SCOPE_THREAD, "data", InspectorAnimationFrameEvent::data(m_context, id));
     InspectorInstrumentation::didRequestAnimationFrame(m_context, id);
 
     return id;
 }
@@ skipping 46 matching lines @@
 DEFINE_TRACE(FrameRequestCallbackCollection)
 {
 #if ENABLE(OILPAN)
     visitor->trace(m_callbacks);
     visitor->trace(m_callbacksToInvoke);
     visitor->trace(m_context);
 #endif
 }
 
 } // namespace blink