Introduce SigninManagerDelegate and use to eliminate CookieSettings dependency.

chrome/browser/signin/signin_manager_base.cc

Index: chrome/browser/signin/signin_manager_base.cc
diff --git a/chrome/browser/signin/signin_manager_base.cc b/chrome/browser/signin/signin_manager_base.cc
index 0433e447c5840c236fe3edcfbcc1ab8743c3f428..980a1fd4cc09d4cbed8d42d62083d57f0a10b67a 100644
--- a/chrome/browser/signin/signin_manager_base.cc
+++ b/chrome/browser/signin/signin_manager_base.cc
@@ -14,7 +14,6 @@
 #include "base/strings/string_split.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/browser_process.h"
-#include "chrome/browser/content_settings/cookie_settings.h"
 #include "chrome/browser/profiles/profile_info_cache.h"
 #include "chrome/browser/profiles/profile_io_data.h"
 #include "chrome/browser/profiles/profile_manager.h"
@@ -40,22 +39,6 @@ using namespace signin_internals_util;
 using content::BrowserThread;
 
 // static
-bool SigninManagerBase::AreSigninCookiesAllowed(Profile* profile) {
-  CookieSettings* cookie_settings =
-      CookieSettings::Factory::GetForProfile(profile);
-  return AreSigninCookiesAllowed(cookie_settings);
-}
-
-// static
-bool SigninManagerBase::AreSigninCookiesAllowed(
-    CookieSettings* cookie_settings) {
-  return cookie_settings &&
-      cookie_settings->IsSettingCookieAllowed(
-          GURL(GaiaUrls::GetInstance()->gaia_origin_url()),
-          GURL(GaiaUrls::GetInstance()->gaia_origin_url()));
-}
-
-// static
 bool SigninManagerBase::IsAllowedUsername(const std::string& username,
                                           const std::string& policy) {
   if (policy.empty())