Add InfoBar delegate for previews

components/data_reduction_proxy/content/browser/content_lofi_ui_service.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 COMPONENTS_DATA_REDUCTION_PROXY_CONTENT_BROWSER_CONTENT_LOFI_UI_SERVICE_H_
 #define COMPONENTS_DATA_REDUCTION_PROXY_CONTENT_BROWSER_CONTENT_LOFI_UI_SERVICE_H_
 
 #include "base/callback.h"
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "components/data_reduction_proxy/core/common/lofi_ui_service.h"
 
 namespace base {
 class SingleThreadTaskRunner;
 }
 
 namespace content {
 class WebContents;
 }
 
 namespace net {
 class URLRequest;
 }
 
 namespace data_reduction_proxy {
 
-typedef base::Callback<void(content::WebContents* web_contents,
-                            bool is_preview)> OnLoFiResponseReceivedCallback;
+using OnLoFiResponseReceivedCallback =
+    base::Callback<void(content::WebContents* web_contents)>;
 
 // Passes notifications to the UI thread that a Lo-Fi response has been
 // received. These notifications may be used to show Lo-Fi UI. This object lives
 // on the IO thread and OnLoFiReponseReceived should be called from there.
 class ContentLoFiUIService : public LoFiUIService {
  public:
   ContentLoFiUIService(
       const scoped_refptr<base::SingleThreadTaskRunner>& ui_task_runner,
       const OnLoFiResponseReceivedCallback& on_lofi_response_received_callback);
   ~ContentLoFiUIService() override;
 
   // LoFiUIService implementation:
-  void OnLoFiReponseReceived(const net::URLRequest& request,
-                             bool is_preview) override;
+  void OnLoFiReponseReceived(const net::URLRequest& request) override;
 
  private:
   // Using the |render_process_id| and |render_frame_id|, gets the associated
   // WebContents if it exists and runs the
-  // |notify_lofi_response_received_callback_|. |is_preview| indicates whether
-  // the response was a Lo-Fi preview response.
+  // |notify_lofi_response_received_callback_|.
   void OnLoFiResponseReceivedOnUIThread(int render_process_id,
-                                        int render_frame_id,
-                                        bool is_preview);
+                                        int render_frame_id);
 
   // A task runner to post calls to OnLoFiReponseReceivedOnUI on the UI
   // thread.
   const scoped_refptr<base::SingleThreadTaskRunner> ui_task_runner_;
   const OnLoFiResponseReceivedCallback on_lofi_response_received_callback_;
 
   DISALLOW_COPY_AND_ASSIGN(ContentLoFiUIService);
 };
 
 }  // namespace data_reduction_proxy
 
 #endif  // COMPONENTS_DATA_REDUCTION_PROXY_CONTENT_BROWSER_CONTENT_LOFI_UI_SERVICE_H_