Test GURL::spec() usage changes with DEPS rolled to the new version.

chrome/browser/extensions/apps_promo.cc

Index: chrome/browser/extensions/apps_promo.cc
diff --git a/chrome/browser/extensions/apps_promo.cc b/chrome/browser/extensions/apps_promo.cc
index 0b5ce5689d6e7330b2e715fd8e2bedeb1263f557..53f7238b744c4d6ca14a48a43a0c1296a6b0c327 100644
--- a/chrome/browser/extensions/apps_promo.cc
+++ b/chrome/browser/extensions/apps_promo.cc
@@ -172,11 +172,14 @@ AppsPromo::PromoData AppsPromo::GetPromo() {
 // static
 void AppsPromo::SetPromo(const AppsPromo::PromoData& data) {
   PrefService* local_state = g_browser_process->local_state();
+  std::string empty;
   local_state->SetString(prefs::kNtpWebStorePromoId, data.id);
   local_state->SetString(prefs::kNtpWebStorePromoButton, data.button);
   local_state->SetString(prefs::kNtpWebStorePromoHeader, data.header);
-  local_state->SetString(prefs::kNtpWebStorePromoLink, data.link.spec());
-  local_state->SetString(prefs::kNtpWebStorePromoLogo, data.logo.spec());
+  local_state->SetString(prefs::kNtpWebStorePromoLink,
+                         data.link.is_valid() ? data.link.spec() : empty);
+  local_state->SetString(prefs::kNtpWebStorePromoLogo,
+                         data.logo.is_valid() ? data.logo.spec() : empty);
   local_state->SetString(prefs::kNtpWebStorePromoExpire, data.expire);
   local_state->SetInteger(prefs::kNtpWebStorePromoUserGroup, data.user_group);
 }
@@ -188,9 +191,10 @@ GURL AppsPromo::GetSourcePromoLogoURL() {
 
 // static
 void AppsPromo::SetSourcePromoLogoURL(const GURL& logo_source) {
-  PrefService* local_state = g_browser_process->local_state();
+  PrefService* local_state = g_browser_process->local_state();\
+  std::string empty;
   local_state->SetString(prefs::kNtpWebStorePromoLogoSource,
-                         logo_source.spec());
+                         logo_source.is_valid() ? logo_source.spec() : empty);
 }
 
 AppsPromo::AppsPromo(PrefService* prefs)