DevTools: use async operation id instead of AsyncCallChain

Source/core/inspector/AsyncCallChainMap.h

 // 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.
 
 #ifndef AsyncCallChainMap_h
 #define AsyncCallChainMap_h
 
 #include "core/inspector/AsyncCallChain.h"
 #include "core/inspector/InspectorDebuggerAgent.h"
 #include "platform/heap/Handle.h"
 #include "wtf/HashMap.h"
 #include "wtf/PassRefPtr.h"
 #include "wtf/RefPtr.h"
 
 namespace blink {
 
 template <class K>
 class AsyncCallChainMap final {
     ALLOW_ONLY_INLINE_ALLOCATION();
 public:
-    using MapType = WillBeHeapHashMap<K, RefPtrWillBeMember<AsyncCallChain>>;
+    using MapType = WillBeHeapHashMap<K, int>;
     explicit AsyncCallChainMap(InspectorDebuggerAgent* debuggerAgent)
         : m_debuggerAgent(debuggerAgent)
     {
     }
 
     ~AsyncCallChainMap()
     {
         // Verify that this object has been explicitly disposed.
         ASSERT(hasBeenDisposed());
     }
 
 #if ENABLE(ASSERT)
     bool hasBeenDisposed() const
     {
         return !m_debuggerAgent;
     }
 #endif
 
     void dispose()
     {
         clear();
         m_debuggerAgent = nullptr;
     }
 
     void clear()
     {
         ASSERT(m_debuggerAgent);
         for (auto it : m_asyncCallChains)
-            m_debuggerAgent->traceAsyncOperationCompleted(it.value.get());
+            m_debuggerAgent->traceAsyncOperationCompleted(it.value);
         m_asyncCallChains.clear();
     }
 
-    void set(typename MapType::KeyPeekInType key, PassRefPtrWillBeRawPtr<AsyncCallChain> chain)
+    void set(typename MapType::KeyPeekInType key, int operationId)
     {
-        m_asyncCallChains.set(key, chain);
+        m_asyncCallChains.set(key, operationId);
     }
 
     bool contains(typename MapType::KeyPeekInType key) const
     {
         return m_asyncCallChains.contains(key);
     }
 
-    PassRefPtrWillBeRawPtr<AsyncCallChain> get(typename MapType::KeyPeekInType key) const
+    int get(typename MapType::KeyPeekInType key) const
     {
         return m_asyncCallChains.get(key);
     }
 
     void remove(typename MapType::KeyPeekInType key)
     {
         ASSERT(m_debuggerAgent);
-        RefPtrWillBeRawPtr<AsyncCallChain> chain = m_asyncCallChains.take(key);
-        if (chain)
-            m_debuggerAgent->traceAsyncOperationCompleted(chain.get());
+        int operationId = m_asyncCallChains.take(key);
+        if (operationId)
+            m_debuggerAgent->traceAsyncOperationCompleted(operationId);
     }
 
     void trace(Visitor* visitor)
     {
         visitor->trace(m_debuggerAgent);
         visitor->trace(m_asyncCallChains);
     }
 
 private:
     RawPtrWillBeMember<InspectorDebuggerAgent> m_debuggerAgent;
     MapType m_asyncCallChains;
 };
 
 } // namespace blink
 
 
 #endif // AsyncCallChainMap_h