Merge 275988 "Move about://-related constants from //content to ..."

content/browser/webui/web_ui_controller_factory_registry.cc

Index: content/browser/webui/web_ui_controller_factory_registry.cc
===================================================================
--- content/browser/webui/web_ui_controller_factory_registry.cc	(revision 276109)
+++ content/browser/webui/web_ui_controller_factory_registry.cc	(working copy)
@@ -83,7 +83,7 @@
   return UseWebUIForURL(browser_context, url) ||
       // It's possible to load about:blank in a Web UI renderer.
       // See http://crbug.com/42547
-      url.spec() == kAboutBlankURL ||
+      url.spec() == url::kAboutBlankURL ||
       // javascript: and debug URLs like chrome://kill are allowed.
       IsRendererDebugURL(url);
 }