Expose ReconcilorState. Rename MergeSession in Signin Tracker.

chrome/browser/signin/fake_gaia_cookie_manager_service.cc

Index: chrome/browser/signin/fake_gaia_cookie_manager_service.cc
diff --git a/chrome/browser/signin/fake_gaia_cookie_manager_service.cc b/chrome/browser/signin/fake_gaia_cookie_manager_service.cc
index 430f8abbdd3b47e54dea160dc027e56703ff6d67..0203d46f396c373d23fa9cb74a71fc8671e6dbc5 100644
--- a/chrome/browser/signin/fake_gaia_cookie_manager_service.cc
+++ b/chrome/browser/signin/fake_gaia_cookie_manager_service.cc
@@ -34,6 +34,16 @@ void FakeGaiaCookieManagerService::SetListAccountsResponseHttpNotFound() {
       net::URLRequestStatus::SUCCESS);
 }
 
+void FakeGaiaCookieManagerService::SetListAccountsResponseWebLoginRequired() {
+  DCHECK(url_fetcher_factory_);
+  url_fetcher_factory_->SetFakeResponse(
+      GaiaUrls::GetInstance()->ListAccountsURLWithSource(
+          GaiaConstants::kChromeSource),
+      "Info=WebLoginRequired",
+      net::HTTP_OK,
+      net::URLRequestStatus::SUCCESS);
+}
+
 void FakeGaiaCookieManagerService::SetListAccountsResponseNoAccounts() {
   DCHECK(url_fetcher_factory_);
   url_fetcher_factory_->SetFakeResponse(