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 ef1f3c1d3efcfcd2ed631aa72c053b6fa2955aaa..a6b00f7722a12ba3b49f42101be51d1ede0102ba 100644
--- a/content/browser/frame_host/navigator_impl.cc
+++ b/content/browser/frame_host/navigator_impl.cc
@@ -543,7 +543,7 @@ 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
@@ -596,7 +596,7 @@ 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;