Move about://-related constants from //content to //url

content/browser/frame_host/navigator_impl.cc

Index: content/browser/frame_host/navigator_impl.cc
diff --git a/content/browser/frame_host/navigator_impl.cc b/content/browser/frame_host/navigator_impl.cc
index 493f94082eb4d8e9d43020081e95a78eb38bb885..40599ab62d1f746a720bc1a3eccd5aa015cad060 100644
--- a/content/browser/frame_host/navigator_impl.cc
+++ b/content/browser/frame_host/navigator_impl.cc
@@ -526,7 +526,7 @@ void NavigatorImpl::DidNavigate(
 bool NavigatorImpl::ShouldAssignSiteForURL(const GURL& url) {
   // about:blank should not "use up" a new SiteInstance.  The SiteInstance can
   // still be used for a normal web site.
-  if (url == GURL(kAboutBlankURL))
+  if (url == GURL(url::kAboutBlankURL))
     return false;
 
   // The embedder will then have the opportunity to determine if the URL
@@ -579,7 +579,7 @@ void NavigatorImpl::RequestTransferURL(
           GetSiteInstance();
   if (!GetContentClient()->browser()->ShouldAllowOpenURL(
           current_site_instance, url)) {
-    dest_url = GURL(kAboutBlankURL);
+    dest_url = GURL(url::kAboutBlankURL);
   }
 
   int64 frame_tree_node_id = -1;