<webview>: Do not show blocked_by_client error page for guest.

content/public/common/renderer_preferences.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.
 //
 // A struct for managing browser's settings that apply to the renderer or its
 // webview.  These differ from WebPreferences since they apply to Chromium's
 // glue layer rather than applying to just WebKit.
 //
 // Adding new values to this class probably involves updating
 // common/view_messages.h, browser/browser.cc, etc.
@@ skipping 119 matching lines @@
   bool report_frame_name_changes;
 
   // Controls deacceleration of touchpad-initiated flings.
   std::vector<float> touchpad_fling_profile;
 
   // Controls deacceleration of touchscreen-initiated flings.
   std::vector<float> touchscreen_fling_profile;
 
   // How to handle a tap gesture touching multiple targets
   TapMultipleTargetsStrategy tap_multiple_targets_strategy;
+
+  // Disables rendering default error page when client choses to block a page.
+  // Corresponds to net::ERR_BLOCKED_BY_CLIENT.
+  bool disable_client_blocked_error_page;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_COMMON_RENDERER_PREFERENCES_H_