Add notification of data reduction proxy field trial

chrome/browser/net/spdyproxy/data_reduction_proxy_infobar_delegate.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 CHROME_BROWSER_NET_SPDYPROXY_DATA_REDUCTION_PROXY_INFOBAR_DELEGATE_H_
+#define CHROME_BROWSER_NET_SPDYPROXY_DATA_REDUCTION_PROXY_INFOBAR_DELEGATE_H_
+
+#include "base/basictypes.h"
+#include "base/memory/scoped_ptr.h"
+#include "components/infobars/core/confirm_infobar_delegate.h"
+#include "components/infobars/core/infobar_delegate.h"
+
+namespace content {
+class WebContents;
+}
+
+// Configures an InfoBar with no buttons that stays visible until it is
+// explicitly dismissed. This InfoBar is suitable for displaying a message
+// and a link, and is used only by an Android field trial.
+class DataReductionProxyInfoBarDelegate : public ConfirmInfoBarDelegate {
+ public:
+  // Creates the InfoBar and adds it to the provided |web_contents|.
+  static void Create(content::WebContents* web_contents);
+
+  virtual ~DataReductionProxyInfoBarDelegate();
+
+ private:
+  DataReductionProxyInfoBarDelegate();
+
+  // Returns a Data Reduction Proxy infobar that owns |delegate|.
+  static scoped_ptr<infobars::InfoBar> CreateInfoBar(
+      scoped_ptr<DataReductionProxyInfoBarDelegate> delegate);
+
+  // ConfirmInfoBarDelegate
+  virtual base::string16 GetMessageText() const OVERRIDE;
+  virtual int GetButtons() const OVERRIDE;
+  virtual bool ShouldExpire(const NavigationDetails& details) const OVERRIDE;
+
+  DISALLOW_COPY_AND_ASSIGN(DataReductionProxyInfoBarDelegate);
+};
+
+#endif  // CHROME_BROWSER_NET_SPDYPROXY_DATA_REDUCTION_PROXY_INFOBAR_DELEGATE_H_