components: Move PrefRegistrySyncable into user_prefs namespace.

chrome/browser/printing/cloud_print/cloud_print_url.cc

Index: chrome/browser/printing/cloud_print/cloud_print_url.cc
diff --git a/chrome/browser/printing/cloud_print/cloud_print_url.cc b/chrome/browser/printing/cloud_print/cloud_print_url.cc
index ce133f63059ed5d6f2089455a6864f8a6a3a2853..16ae5adfa91c9a18af84770acd35859eead56716 100644
--- a/chrome/browser/printing/cloud_print/cloud_print_url.cc
+++ b/chrome/browser/printing/cloud_print/cloud_print_url.cc
@@ -28,15 +28,19 @@ const char kTestPageURL[] =
     "http://www.google.com/landing/cloudprint/enable.html?print=true";
 
 // static
-void CloudPrintURL::RegisterUserPrefs(PrefRegistrySyncable* registry) {
-  registry->RegisterStringPref(prefs::kCloudPrintServiceURL,
-                               kDefaultCloudPrintServiceURL,
-                               PrefRegistrySyncable::UNSYNCABLE_PREF);
+void CloudPrintURL::RegisterUserPrefs(
+    user_prefs::PrefRegistrySyncable* registry) {
+  registry->RegisterStringPref(
+      prefs::kCloudPrintServiceURL,
+      kDefaultCloudPrintServiceURL,
+      user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF);
   std::string url = GaiaUrls::GetInstance()->service_login_url();
   url.append("?service=cloudprint&sarp=1&continue=");
   url.append(net::EscapeQueryParamValue(kDefaultCloudPrintServiceURL, false));
-  registry->RegisterStringPref(prefs::kCloudPrintSigninURL, url,
-                               PrefRegistrySyncable::UNSYNCABLE_PREF);
+  registry->RegisterStringPref(
+      prefs::kCloudPrintSigninURL,
+      url,
+      user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF);
 }
 
 // Returns the root service URL for the cloud print service.  The default is to