Fix page zoom for plug-in documents (PDF, etc.)

content/public/common/renderer_preferences.h

 // Copyright (c) 2011 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 61 matching lines @@
   // Browser wants a look at all top level requests
   bool browser_handles_top_level_requests;
 
   // Cursor blink rate in seconds.
   // Currently only changed from default on Linux.  Uses |gtk-cursor-blink|
   // from GtkSettings.
   double caret_blink_interval;
 
   // Set to false to not send referrers.
   bool enable_referrers;
+
+  // Default page zoom level.
+  double default_zoom_level;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_COMMON_RENDERER_PREFERENCES_H_