[Sync] Add HTTP status codes to NavigationEntry and TabNavigation

chrome/browser/sessions/session_types_test_helper.cc

Index: chrome/browser/sessions/session_types_test_helper.cc
diff --git a/chrome/browser/sessions/session_types_test_helper.cc b/chrome/browser/sessions/session_types_test_helper.cc
index f735ab7ea91c6ada05fdef375c844c5ada0d9525..cae80db1a9318828e1fb744a245139b0dc368450 100644
--- a/chrome/browser/sessions/session_types_test_helper.cc
+++ b/chrome/browser/sessions/session_types_test_helper.cc
@@ -37,6 +37,7 @@ TabNavigation SessionTypesTestHelper::CreateNavigation(
   navigation.title_ = UTF8ToUTF16(title);
   navigation.content_state_ = "fake_state";
   navigation.timestamp_ = base::Time::Now();
+  navigation.http_status_code_ = 200;
   return navigation;
 }
 
@@ -71,6 +72,10 @@ bool SessionTypesTestHelper::GetIsOverridingUserAgent(
 base::Time SessionTypesTestHelper::GetTimestamp(
     const TabNavigation& navigation) {
   return navigation.timestamp_;
+
+int SessionTypesTestHelper::GetHttpStatusCode(
+    const TabNavigation& navigation) {
+  return navigation.http_status_code_;
 }
 
 void SessionTypesTestHelper::SetContentState(