Unset the page-scale-factor limits if enable-pinch flag is turned on.

webkit/glue/webpreferences.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 webkit's settings.
 //
 // Adding new values to this class probably involves updating
 // WebKit::WebSettings, common/render_messages.cc, browser/tab_contents/
 // render_view_host_delegate_helper.cc, and browser/profiles/profile.cc.
 
@@ skipping 109 matching lines @@
   bool enable_scroll_animator;
   bool hixie76_websocket_protocol_enabled;
   bool visual_word_movement_enabled;
   bool per_tile_painting_enabled;
   bool css_regions_enabled;
   bool css_shaders_enabled;
   int default_tile_width;
   int default_tile_height;
   int max_untiled_layer_width;
   int max_untiled_layer_height;
+  bool force_enable_page_scale;

[jamesr, 2012/05/24 21:02:37]

can you put this next to the other page/device scale related options? down here
it'll merge conflict with other patches to this file

[sadrul, 2012/05/24 21:10:16]

Done.

 
   // We try to keep the default values the same as the default values in
   // chrome, except for the cases where it would require lots of extra work for
   // the embedder to use the same default value.
   WebPreferences();
   ~WebPreferences();
 
   void Apply(WebKit::WebView* web_view) const;
 };
 
 }  // namespace webkit_glue
 
 #endif  // WEBKIT_GLUE_WEBPREFERENCES_H__