content: Move more two url constants to 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 dcf69d59eb248175d78fb5ea2578dcd0e75a04b6..dedb3fede9b239824bfdcba51487bf1bd094662b 100644
--- a/content/public/common/url_constants.h
+++ b/content/public/common/url_constants.h
@@ -52,16 +52,16 @@ CONTENT_EXPORT extern const char kChromeUIKillURL[];
 CONTENT_EXPORT extern const char kChromeUINetworkViewCacheURL[];
 CONTENT_EXPORT extern const char kChromeUIShorthangURL[];
 
+}  // namespace chrome
+
+namespace content {
+
 // Special URL used to start a navigation to an error page.
 extern const char kUnreachableWebDataURL[];
 
 // Special URL used to swap out a view being rendered by another process.
 extern const char kSwappedOutURL[];
 
-}  // namespace chrome
-
-namespace content {
-
 // Null terminated list of schemes that are savable. This function can be
 // invoked on any thread.
 CONTENT_EXPORT const char** GetSavableSchemes();