Reland of DevTools: extract V8DebuggerAgent interface, move it under .../inspector/v8

third_party/WebKit/Source/core/inspector/v8/V8AsyncCallTracker.h

Index: third_party/WebKit/Source/core/inspector/v8/V8AsyncCallTracker.h
diff --git a/third_party/WebKit/Source/core/inspector/v8/V8AsyncCallTracker.h b/third_party/WebKit/Source/core/inspector/v8/V8AsyncCallTracker.h
new file mode 100644
index 0000000000000000000000000000000000000000..ecc7ff3aa51fb01704689838e2891a5f2f6a85bf
--- /dev/null
+++ b/third_party/WebKit/Source/core/inspector/v8/V8AsyncCallTracker.h
@@ -0,0 +1,53 @@
+// 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 V8AsyncCallTracker_h
+#define V8AsyncCallTracker_h
+
+#include "bindings/core/v8/ScriptState.h"
+#include "core/inspector/v8/V8DebuggerAgentImpl.h"
+#include "platform/heap/Handle.h"
+#include "wtf/Forward.h"
+#include "wtf/HashMap.h"
+#include "wtf/Noncopyable.h"
+
+namespace blink {
+
+class ScriptState;
+
+class V8AsyncCallTracker final : public NoBaseWillBeGarbageCollectedFinalized<V8AsyncCallTracker>, public ScriptState::Observer {
+    WTF_MAKE_NONCOPYABLE(V8AsyncCallTracker);
+    WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(V8AsyncCallTracker);
+    WTF_MAKE_FAST_ALLOCATED_WILL_BE_REMOVED(V8AsyncCallTracker);
+public:
+    static PassOwnPtrWillBeRawPtr<V8AsyncCallTracker> create(V8DebuggerAgentImpl* debuggerAgent)
+    {
+        return adoptPtrWillBeNoop(new V8AsyncCallTracker(debuggerAgent));
+    }
+
+    ~V8AsyncCallTracker();
+    DECLARE_TRACE();
+
+    void asyncCallTrackingStateChanged(bool tracking);
+    void resetAsyncOperations();
+
+    void didReceiveV8AsyncTaskEvent(ScriptState*, const String& eventType, const String& eventName, int id);
+
+    // ScriptState::Observer implementation:
+    void willDisposeScriptState(ScriptState*) override;
+
+private:
+    explicit V8AsyncCallTracker(V8DebuggerAgentImpl*);
+
+    void didEnqueueV8AsyncTask(ScriptState*, const String& eventName, int id);
+    void willHandleV8AsyncTask(ScriptState*, const String& eventName, int id);
+
+    class V8ContextAsyncOperations;
+    WillBeHeapHashMap<RefPtr<ScriptState>, OwnPtrWillBeMember<V8ContextAsyncOperations>> m_contextAsyncOperationMap;
+    RawPtrWillBeMember<V8DebuggerAgentImpl> m_debuggerAgent;
+};
+
+} // namespace blink
+
+#endif // V8AsyncCallTracker_h