Create ExtensionsRendererClient.

apps/shell/renderer/shell_extensions_renderer_client.h

+// 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 APPS_SHELL_RENDERER_SHELL_EXTENSIONS_RENDERER_CLIENT_H_
+#define APPS_SHELL_RENDERER_SHELL_EXTENSIONS_RENDERER_CLIENT_H_
+
+#include "base/macros.h"
+#include "extensions/renderer/extensions_renderer_client.h"
+
+namespace apps {
+
+class ShellExtensionsRendererClient
+    : public extensions::ExtensionsRendererClient {
+ public:
+  ShellExtensionsRendererClient();
+  virtual ~ShellExtensionsRendererClient();
+
+  // extensions::ExtensionsRendererClient implementation.
+  virtual bool IsIncognitoProcess() const OVERRIDE;
+  virtual int GetLowestIsolatedWorldId() const OVERRIDE;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(ShellExtensionsRendererClient);
+};
+
+}  // namespace apps
+
+#endif  // APPS_SHELL_RENDERER_SHELL_EXTENSIONS_RENDERER_CLIENT_H_