Add infobar for PPAPI broker usage.

chrome/browser/pepper_broker_observer.h

+// Copyright (c) 2012 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 CHROME_BROWSER_PEPPER_BROKER_OBSERVER_H_
+#define CHROME_BROWSER_PEPPER_BROKER_OBSERVER_H_
+
+#include "content/public/browser/web_contents_observer.h"
+
+class PepperBrokerObserver : public content::WebContentsObserver {
+ public:
+  explicit PepperBrokerObserver(content::WebContents* web_contents);
+  virtual ~PepperBrokerObserver();
+
+  virtual bool RequestPpapiBrokerPermission(
+      content::WebContents* web_contents,
+      const GURL& url,
+      const FilePath& plugin_path,
+      const base::Callback<void(bool)>& callback) OVERRIDE;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(PepperBrokerObserver);
+};
+
+#endif  // CHROME_BROWSER_PEPPER_BROKER_OBSERVER_H_