Revert of Rename WorkerPermissionClient and friends to WorkerContentSettingsClient.

public/web/WebWorkerContentSettingsClientProxy.h

-// Copyright 2015 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 WebWorkerContentSettingsClientProxy_h
-#define WebWorkerContentSettingsClientProxy_h
-
-#include "public/platform/WebPermissionCallbacks.h"
-
-namespace blink {
-
-class WebPermissionCallbacks;
-class WebString;
-
-// Proxy interface to talk to the document's ContentSettingsClient
-// implementation.
-// This proxy is created by the embedder and is passed to the worker's
-// WorkerGlobalScope in blink. Each allow method is called on the worker thread
-// and may destructed on the worker thread.
-class WebWorkerContentSettingsClientProxy {
-public:
-    virtual ~WebWorkerContentSettingsClientProxy() { }
-
-    // Deprecated: This function should be removed.
-    virtual bool allowDatabase(const WebString& name, const WebString& displayName, unsigned long estimatedSize)
-    {
-        return true;
-    }
-
-    virtual bool requestFileSystemAccessSync()
-    {
-        return true;
-    }
-
-    virtual bool allowIndexedDB(const WebString& name)
-    {
-        return true;
-    }
-};
-
-} // namespace blink
-
-#endif // WebWorkerContentSettingsClientProxy_h