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

content/public/common/url_constants.h

Index: content/public/common/url_constants.h
===================================================================
--- content/public/common/url_constants.h	(revision 175970)
+++ content/public/common/url_constants.h	(working copy)
@@ -9,6 +9,8 @@
 
 // Contains constants for known URLs and portions thereof.
 
+class GURL;
+
 // TODO(jam): rename this to content.
 namespace chrome {
 
@@ -73,6 +75,10 @@
 // invoked on any thread.
 CONTENT_EXPORT const char* const* GetSavableSchemes();
 
+// Returns true if the url has a scheme for WebUI.  See also
+// WebUIControllerFactory::UseWebUIForURL in the browser process.
+CONTENT_EXPORT bool HasWebUIScheme(const GURL& url);
+
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_COMMON_URL_CONSTANTS_H_