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

third_party/WebKit/Source/core/inspector/V8AsyncCallTracker.cpp

Index: third_party/WebKit/Source/core/inspector/V8AsyncCallTracker.cpp
diff --git a/third_party/WebKit/Source/core/inspector/V8AsyncCallTracker.cpp b/third_party/WebKit/Source/core/inspector/V8AsyncCallTracker.cpp
deleted file mode 100644
index 8e68a5daf6278a1082944439a8144929ef4374e5..0000000000000000000000000000000000000000
--- a/third_party/WebKit/Source/core/inspector/V8AsyncCallTracker.cpp
+++ /dev/null
@@ -1,143 +0,0 @@
-// 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.
-
-#include "config.h"
-#include "core/inspector/V8AsyncCallTracker.h"
-
-#include "bindings/core/v8/V8PerContextData.h"
-#include "core/inspector/AsyncOperationMap.h"
-#include "platform/heap/Handle.h"
-#include "wtf/HashMap.h"
-#include "wtf/text/StringBuilder.h"
-#include "wtf/text/StringHash.h"
-#include "wtf/text/WTFString.h"
-
-namespace blink {
-
-namespace {
-
-static const char v8AsyncTaskEventEnqueue[] = "enqueue";
-static const char v8AsyncTaskEventWillHandle[] = "willHandle";
-static const char v8AsyncTaskEventDidHandle[] = "didHandle";
-
-}
-
-class V8AsyncCallTracker::V8ContextAsyncOperations final : public NoBaseWillBeGarbageCollectedFinalized<V8AsyncCallTracker::V8ContextAsyncOperations> {
-    WTF_MAKE_NONCOPYABLE(V8ContextAsyncOperations);
-public:
-    explicit V8ContextAsyncOperations(V8DebuggerAgent* debuggerAgent)
-        : m_v8AsyncOperations(debuggerAgent)
-    {
-    }
-
-    ~V8ContextAsyncOperations()
-    {
-        ASSERT(m_v8AsyncOperations.hasBeenDisposed());
-    }
-
-    void dispose()
-    {
-        // FIXME: get rid of the dispose method and this class altogether once AsyncOperationMap is always allocated on C++ heap.
-        m_v8AsyncOperations.dispose();
-    }
-
-    DEFINE_INLINE_TRACE()
-    {
-#if ENABLE(OILPAN)
-        visitor->trace(m_v8AsyncOperations);
-#endif
-    }
-
-    AsyncOperationMap<String> m_v8AsyncOperations;
-};
-
-static String makeV8AsyncTaskUniqueId(const String& eventName, int id)
-{
-    StringBuilder builder;
-    builder.append(eventName);
-    builder.append(" -> ");
-    builder.appendNumber(id);
-    return builder.toString();
-}
-
-V8AsyncCallTracker::V8AsyncCallTracker(V8DebuggerAgent* debuggerAgent) : m_debuggerAgent(debuggerAgent)
-{
-    m_debuggerAgent->addAsyncCallTrackingListener(this);
-}
-
-V8AsyncCallTracker::~V8AsyncCallTracker()
-{
-    ASSERT(m_contextAsyncOperationMap.isEmpty());
-#if !ENABLE(OILPAN)
-    m_debuggerAgent->removeAsyncCallTrackingListener(this);
-#endif
-}
-
-DEFINE_TRACE(V8AsyncCallTracker)
-{
-#if ENABLE(OILPAN)
-    visitor->trace(m_contextAsyncOperationMap);
-    visitor->trace(m_debuggerAgent);
-#endif
-    V8DebuggerAgent::AsyncCallTrackingListener::trace(visitor);
-}
-
-void V8AsyncCallTracker::asyncCallTrackingStateChanged(bool)
-{
-}
-
-void V8AsyncCallTracker::resetAsyncOperations()
-{
-    for (auto& it : m_contextAsyncOperationMap) {
-        it.key->removeObserver(this);
-        it.value->dispose();
-    }
-    m_contextAsyncOperationMap.clear();
-}
-
-void V8AsyncCallTracker::willDisposeScriptState(ScriptState* state)
-{
-    m_contextAsyncOperationMap.remove(state);
-}
-
-void V8AsyncCallTracker::didReceiveV8AsyncTaskEvent(ScriptState* state, const String& eventType, const String& eventName, int id)
-{
-    ASSERT(m_debuggerAgent->trackingAsyncCalls());
-    if (eventType == v8AsyncTaskEventEnqueue)
-        didEnqueueV8AsyncTask(state, eventName, id);
-    else if (eventType == v8AsyncTaskEventWillHandle)
-        willHandleV8AsyncTask(state, eventName, id);
-    else if (eventType == v8AsyncTaskEventDidHandle)
-        m_debuggerAgent->traceAsyncCallbackCompleted();
-    else
-        ASSERT_NOT_REACHED();
-}
-
-void V8AsyncCallTracker::didEnqueueV8AsyncTask(ScriptState* state, const String& eventName, int id)
-{
-    ASSERT(state);
-    ASSERT(m_debuggerAgent->trackingAsyncCalls());
-    int operationId = m_debuggerAgent->traceAsyncOperationStarting(eventName);
-    if (!operationId)
-        return;
-    V8ContextAsyncOperations* contextCallChains = m_contextAsyncOperationMap.get(state);
-    if (!contextCallChains)
-        contextCallChains = m_contextAsyncOperationMap.set(state, adoptPtrWillBeNoop(new V8ContextAsyncOperations(m_debuggerAgent))).storedValue->value.get();
-    contextCallChains->m_v8AsyncOperations.set(makeV8AsyncTaskUniqueId(eventName, id), operationId);
-}
-
-void V8AsyncCallTracker::willHandleV8AsyncTask(ScriptState* state, const String& eventName, int id)
-{
-    ASSERT(state);
-    ASSERT(m_debuggerAgent->trackingAsyncCalls());
-    if (V8ContextAsyncOperations* contextCallChains = m_contextAsyncOperationMap.get(state)) {
-        String taskId = makeV8AsyncTaskUniqueId(eventName, id);
-        m_debuggerAgent->traceAsyncCallbackStarting(contextCallChains->m_v8AsyncOperations.get(taskId));
-        contextCallChains->m_v8AsyncOperations.remove(taskId);
-    } else {
-        m_debuggerAgent->traceAsyncCallbackStarting(V8DebuggerAgent::unknownAsyncOperationId);
-    }
-}
-
-} // namespace blink