don't display platform app resources in normal browser windows

chrome/browser/extensions/extension_service.h

Index: chrome/browser/extensions/extension_service.h
diff --git a/chrome/browser/extensions/extension_service.h b/chrome/browser/extensions/extension_service.h
index bc075b3043194c2362c24f29654ce7fe4e48e960..68f7fb8986bdc433c1a843f5a58152cac3557c6a 100644
--- a/chrome/browser/extensions/extension_service.h
+++ b/chrome/browser/extensions/extension_service.h
@@ -387,6 +387,10 @@ class ExtensionService
   // permissions the given extension has been granted.
   bool ExtensionBindingsAllowed(const GURL& url);
 
+  // Returns true if a normal browser window should avoid showing |url| in a
+  // tab. In this case, |url| is also rewritten to an error URL.
+  bool ShouldBlockUrlInBrowserTab(GURL* url);
+
   // Returns the icon to display in the omnibox for the given extension.
   gfx::Image GetOmniboxIcon(const std::string& extension_id);