Remove references to DOMUIContents. It looks like the class doesn't exist.

chrome/common/url_constants.h

Index: chrome/common/url_constants.h
diff --git a/chrome/common/url_constants.h b/chrome/common/url_constants.h
index ff1b5abd870a791a394c102304205d08df0e0e60..0cbde1568ac26975ec8f5cd3096ec4a025f068fa 100644
--- a/chrome/common/url_constants.h
+++ b/chrome/common/url_constants.h
@@ -12,7 +12,7 @@ namespace chrome {
 // Canonical schemes you can use as input to GURL.SchemeIs().
 extern const char kAboutScheme[];
 extern const char kChromeInternalScheme[];
-extern const char kChromeUIScheme[];  // The scheme used for DOMUIContentses.
+extern const char kChromeUIScheme[];  // The scheme used for DOMUIs.
 extern const char kDataScheme[];
 extern const char kExtensionScheme[];
 extern const char kFileScheme[];