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diff --git a/Source/WebCore/inspector/WebInjectedScriptManager.cpp b/Source/WebCore/inspector/WebInjectedScriptManager.cpp
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+++ b/Source/WebCore/inspector/WebInjectedScriptManager.cpp
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+/*
+ * Copyright (C) 2013 Apple Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "config.h"
+#include "WebInjectedScriptManager.h"
+
+#include "CommandLineAPIModule.h"
+#include "ScriptState.h"
+
+using namespace Inspector;
+
+namespace WebCore {
+
+WebInjectedScriptManager::WebInjectedScriptManager(InspectorEnvironment& environment, Ref<InjectedScriptHost>&& host)
+    : InjectedScriptManager(environment, WTFMove(host))
+    , m_commandLineAPIHost(CommandLineAPIHost::create())
+{
+}
+
+void WebInjectedScriptManager::disconnect()
+{
+    InjectedScriptManager::disconnect();
+
+    m_commandLineAPIHost->disconnect();
+    m_commandLineAPIHost = nullptr;
+}
+
+void WebInjectedScriptManager::discardInjectedScripts()
+{
+    InjectedScriptManager::discardInjectedScripts();
+
+    m_commandLineAPIHost->clearAllWrappers();
+}
+
+void WebInjectedScriptManager::didCreateInjectedScript(const Inspector::InjectedScript& injectedScript)
+{
+    CommandLineAPIModule::injectIfNeeded(this, injectedScript);
+}
+
+void WebInjectedScriptManager::discardInjectedScriptsFor(DOMWindow* window)
+{
+    if (m_scriptStateToId.isEmpty())
+        return;
+
+    Vector<long> idsToRemove;
+    for (const auto& it : m_idToInjectedScript) {
+        JSC::ExecState* scriptState = it.value.scriptState();
+        if (window != domWindowFromExecState(scriptState))
+            continue;
+        m_scriptStateToId.remove(scriptState);
+        idsToRemove.append(it.key);
+    }
+
+    for (auto& id : idsToRemove)
+        m_idToInjectedScript.remove(id);
+
+    // Now remove script states that have id but no injected script.
+    Vector<JSC::ExecState*> scriptStatesToRemove;
+    for (const auto& it : m_scriptStateToId) {
+        JSC::ExecState* scriptState = it.key;
+        if (window == domWindowFromExecState(scriptState))
+            scriptStatesToRemove.append(scriptState);
+    }
+
+    for (auto& scriptState : scriptStatesToRemove)
+        m_scriptStateToId.remove(scriptState);
+}
+
+} // namespace WebCore