Revert 175890: actually, looks like we want this to also help move chromeos webui pages out of src/…

content/public/common/content_client.h

Index: content/public/common/content_client.h
===================================================================
--- content/public/common/content_client.h	(revision 175970)
+++ content/public/common/content_client.h	(working copy)
@@ -100,10 +100,6 @@
       std::vector<std::string>* standard_schemes,
       std::vector<std::string>* savable_schemes) {}
 
-  // Returns true if the url has a scheme for WebUI.  See also
-  // WebUIControllerFactory::UseWebUIForURL in the browser process.
-  virtual bool HasWebUIScheme(const GURL& url) const;
-
   // Returns whether the given message should be processed in the browser on
   // behalf of a swapped out renderer.
   virtual bool CanHandleWhileSwappedOut(const IPC::Message& message);