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diff --git a/chromium/third_party/WebKit/Source/web/WebWorkerClientImpl.cpp b/chromium/third_party/WebKit/Source/web/WebWorkerClientImpl.cpp
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--- /dev/null
+++ b/chromium/third_party/WebKit/Source/web/WebWorkerClientImpl.cpp
@@ -0,0 +1,157 @@
+/*
+ * Copyright (C) 2009 Google 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:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * 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.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "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 THE COPYRIGHT
+ * OWNER 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 "WebWorkerClientImpl.h"
+
+#include "bindings/v8/WorkerScriptController.h"
+#include "core/dom/CrossThreadTask.h"
+#include "core/dom/Document.h"
+#include "core/dom/ErrorEvent.h"
+#include "core/dom/MessageEvent.h"
+#include "core/dom/MessagePort.h"
+#include "core/dom/MessagePortChannel.h"
+#include "core/dom/ScriptExecutionContext.h"
+#include "core/inspector/InspectorInstrumentation.h"
+#include "core/inspector/ScriptCallStack.h"
+#include "core/loader/FrameLoaderClient.h"
+#include "core/page/Frame.h"
+#include "core/page/Page.h"
+#include "core/page/PageGroup.h"
+#include "core/workers/DedicatedWorkerThread.h"
+#include "core/workers/Worker.h"
+#include "core/workers/WorkerClients.h"
+#include "core/workers/WorkerGlobalScope.h"
+#include "core/workers/WorkerMessagingProxy.h"
+#include "wtf/OwnPtr.h"
+#include "wtf/Threading.h"
+
+#include "FrameLoaderClientImpl.h"
+#include "WebFrameClient.h"
+#include "WebFrameImpl.h"
+#include "WebPermissionClient.h"
+#include "WebViewImpl.h"
+#include "WorkerFileSystemClient.h"
+#include "core/dom/default/chromium/PlatformMessagePortChannelChromium.h"
+#include "public/platform/WebFileSystemCallbacks.h"
+#include "public/platform/WebMessagePortChannel.h"
+#include "public/platform/WebString.h"
+#include "public/platform/WebURL.h"
+
+using namespace WebCore;
+
+namespace WebKit {
+
+// Chromium-specific decorator of WorkerMessagingProxy.
+
+// static
+WorkerGlobalScopeProxy* WebWorkerClientImpl::createWorkerGlobalScopeProxy(Worker* worker)
+{
+    if (worker->scriptExecutionContext()->isDocument()) {
+        Document* document = toDocument(worker->scriptExecutionContext());
+        WebFrameImpl* webFrame = WebFrameImpl::fromFrame(document->frame());
+        OwnPtr<WorkerClients> workerClients = WorkerClients::create();
+        provideLocalFileSystemToWorker(workerClients.get(), WorkerFileSystemClient::create());
+        WebWorkerClientImpl* proxy = new WebWorkerClientImpl(worker, webFrame, workerClients.release());
+        return proxy;
+    }
+    ASSERT_NOT_REACHED();
+    return 0;
+}
+
+void WebWorkerClientImpl::terminateWorkerGlobalScope()
+{
+    m_webFrame = 0;
+    WebCore::WorkerMessagingProxy::terminateWorkerGlobalScope();
+}
+
+WebWorkerBase* WebWorkerClientImpl::toWebWorkerBase()
+{
+    return this;
+}
+
+WebView* WebWorkerClientImpl::view() const
+{
+    if (askedToTerminate())
+        return 0;
+    return m_webFrame->view();
+}
+
+bool WebWorkerClientImpl::allowDatabase(WebFrame*, const WebString& name, const WebString& displayName, unsigned long estimatedSize)
+{
+    if (askedToTerminate())
+        return false;
+    WebKit::WebViewImpl* webView = m_webFrame->viewImpl();
+    if (!webView)
+        return false;
+    return !webView->permissionClient() || webView->permissionClient()->allowDatabase(m_webFrame, name, displayName, estimatedSize);
+}
+
+bool WebWorkerClientImpl::allowFileSystem()
+{
+    if (askedToTerminate())
+        return false;
+    WebKit::WebViewImpl* webView = m_webFrame->viewImpl();
+    if (!webView)
+        return false;
+    return !webView->permissionClient() || webView->permissionClient()->allowFileSystem(m_webFrame);
+}
+
+void WebWorkerClientImpl::openFileSystem(WebFileSystemType type, long long size, bool create,
+    WebFileSystemCallbacks* callbacks)
+{
+    if (askedToTerminate()) {
+        callbacks->didFail(WebFileErrorAbort);
+        return;
+    }
+    m_webFrame->client()->openFileSystem(m_webFrame, type, size, create, callbacks);
+}
+
+bool WebWorkerClientImpl::allowIndexedDB(const WebString& name)
+{
+    if (askedToTerminate())
+        return false;
+    WebKit::WebViewImpl* webView = m_webFrame->viewImpl();
+    if (!webView)
+        return false;
+    return !webView->permissionClient() || webView->permissionClient()->allowIndexedDB(m_webFrame, name, WebSecurityOrigin());
+}
+
+WebWorkerClientImpl::WebWorkerClientImpl(Worker* worker, WebFrameImpl* webFrame, PassOwnPtr<WorkerClients> workerClients)
+    : WebCore::WorkerMessagingProxy(worker, workerClients)
+    , m_webFrame(webFrame)
+{
+}
+
+WebWorkerClientImpl::~WebWorkerClientImpl()
+{
+}
+
+} // namespace WebKit