Remove static initializer in url_info.cc.

chrome/browser/net/predictor.h

Index: chrome/browser/net/predictor.h
diff --git a/chrome/browser/net/predictor.h b/chrome/browser/net/predictor.h
index 9b5a0f10daf356383198a5445b5d9e048f6de48a..97789436de24b9958399d5df172822f3941a8967 100644
--- a/chrome/browser/net/predictor.h
+++ b/chrome/browser/net/predictor.h
@@ -368,10 +368,10 @@ class Predictor {
   }
 
   // Only for testing. Return how long was the resolution
-  // or UrlInfo::kNullDuration if it hasn't been resolved yet.
+  // or UrlInfo::NullDuration() if it hasn't been resolved yet.
   base::TimeDelta GetResolutionDuration(const GURL& url) {
     if (results_.find(url) == results_.end())
-      return UrlInfo::kNullDuration;
+      return UrlInfo::NullDuration();
     return results_[url].resolve_duration();
   }