Move some content url constants to /url.

chrome/browser/history/visit_database.cc

Index: chrome/browser/history/visit_database.cc
diff --git a/chrome/browser/history/visit_database.cc b/chrome/browser/history/visit_database.cc
index 20e98b11807ef7964a020374b97ec5a2376113d0..5e739125a5d0b001087d74666786878cbad9db75 100644
--- a/chrome/browser/history/visit_database.cc
+++ b/chrome/browser/history/visit_database.cc
@@ -15,6 +15,7 @@
 #include "chrome/browser/history/visit_filter.h"
 #include "chrome/common/url_constants.h"
 #include "content/public/common/page_transition_types.h"
+#include "net/base/url_constants.h"
 #include "sql/statement.h"
 
 namespace history {
@@ -490,8 +491,7 @@ bool VisitDatabase::GetRedirectToVisit(VisitID to_visit,
 bool VisitDatabase::GetVisibleVisitCountToHost(const GURL& url,
                                                int* count,
                                                base::Time* first_visit) {
-  if (!url.SchemeIs(content::kHttpScheme) &&
-      !url.SchemeIs(content::kHttpsScheme))
+  if (!url.SchemeIs(net::kHttpScheme) && !url.SchemeIs(net::kHttpsScheme))
     return false;
 
   // We need to search for URLs with a matching host/port. One way to query for