content: Move kStandardSchemeSeparator into content namespace.

content/public/common/url_constants.h

Index: content/public/common/url_constants.h
diff --git a/content/public/common/url_constants.h b/content/public/common/url_constants.h
index e67e192f2a477b90ca2c8390a97ab5fe6f0b27cb..a6e7567cf67b96d6527c5bde00bf05daea14db38 100644
--- a/content/public/common/url_constants.h
+++ b/content/public/common/url_constants.h
@@ -34,9 +34,6 @@ CONTENT_EXPORT extern const char kMetadataScheme[];
 CONTENT_EXPORT extern const char kSwappedOutScheme[];
 CONTENT_EXPORT extern const char kViewSourceScheme[];
 
-// Used to separate a standard scheme and the hostname: "://".
-CONTENT_EXPORT extern const char kStandardSchemeSeparator[];
-
 // Hosts for about URLs.
 CONTENT_EXPORT extern const char kAboutBlankURL[];
 CONTENT_EXPORT extern const char kChromeUIAppCacheInternalsHost[];
@@ -59,6 +56,9 @@ CONTENT_EXPORT extern const char kChromeUIShorthangURL[];
 
 namespace content {
 
+// Used to separate a standard scheme and the hostname: "://".
+CONTENT_EXPORT extern const char kStandardSchemeSeparator[];
+
 // Special URL used to start a navigation to an error page.
 extern const char kUnreachableWebDataURL[];