Shows chrome-extension urls and greys out the whole url.

content/public/browser/web_ui.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.
 
 #ifndef CONTENT_PUBLIC_BROWSER_WEB_UI_H_
 #define CONTENT_PUBLIC_BROWSER_WEB_UI_H_
 
 #include <vector>
 
 #include "base/basictypes.h"
@@ skipping 54 matching lines @@
   // the page contents. Some pages will want to use this to encourage the user
   // to type in the URL bar.
   virtual bool ShouldFocusLocationBarByDefault() const = 0;
   virtual void FocusLocationBarByDefault() = 0;
 
   // Returns true if the page's URL should be hidden. Some Web UI pages
   // like the new tab page will want to hide it.
   virtual bool ShouldHideURL() const = 0;
   virtual void HideURL() = 0;
 
+  // Returns true if the pages URL should be entirely greyed out, currently

[Peter Kasting, 2013/04/03 22:32:13]

Nit: Comma -> period and capitalize next word

[Patrick Riordan, 2013/04/04 01:01:37]

Done.

+  // this is only the case for chrome-extension:// URLs.
+  virtual bool ShouldGreyOutURL() const = 0;
+  virtual void GreyOutURL() = 0;
+
   // Gets a custom tab title provided by the Web UI. If there is no title
   // override, the string will be empty which should trigger the default title
   // behavior for the tab.
   virtual const string16& GetOverriddenTitle() const = 0;
   virtual void OverrideTitle(const string16& title) = 0;
 
   // Returns the transition type that should be used for link clicks on this
   // Web UI. This will default to LINK but may be overridden.
   virtual PageTransition GetLinkTransitionType() const = 0;
   virtual void SetLinkTransitionType(PageTransition type) = 0;
@@ skipping 44 matching lines @@
                                       const base::Value& arg3,
                                       const base::Value& arg4) = 0;
   virtual void CallJavascriptFunction(
       const std::string& function_name,
       const std::vector<const base::Value*>& args) = 0;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_WEB_UI_H_