Move chrome-specific SerializedNavigation code to chrome/.

chrome/browser/android/ntp/new_tab_page_url_handler.cc

Index: chrome/browser/android/ntp/new_tab_page_url_handler.cc
diff --git a/chrome/browser/android/ntp/new_tab_page_url_handler.cc b/chrome/browser/android/ntp/new_tab_page_url_handler.cc
index e4396d207854049489e5ebdbcaef0447b57a3118..18a61b180ee2870a0afb77e99f66e71046f03509 100644
--- a/chrome/browser/android/ntp/new_tab_page_url_handler.cc
+++ b/chrome/browser/android/ntp/new_tab_page_url_handler.cc
@@ -36,9 +36,9 @@ bool HandleAndroidNativePageURL(GURL* url,
     // chrome-native://history when M57 is a distant memory.
     // See http://crbug.com/654071.
     if (base::FeatureList::IsEnabled(features::kNativeAndroidHistoryManager) &&
-        (url->host() == content::kChromeUIHistoryHost ||
+        (url->host() == kChromeUIHistoryHost ||
          url->host() == kChromeUIHistoryFrameHost)) {
-      *url = GURL(content::kChromeUINativeHistoryURL);
+      *url = GURL(kChromeUINativeHistoryURL);
       return true;
     }