Deprecate most of gaia_auth extension

chrome/browser/extensions/signin/gaia_auth_extension_loader.h

Index: chrome/browser/extensions/signin/gaia_auth_extension_loader.h
diff --git a/chrome/browser/extensions/signin/gaia_auth_extension_loader.h b/chrome/browser/extensions/signin/gaia_auth_extension_loader.h
index a4d84a9401bc73eec4d0719cf7835d98ce9843d0..bc1fe6ec9fbe73d1d0109baff08481960dd36e92 100644
--- a/chrome/browser/extensions/signin/gaia_auth_extension_loader.h
+++ b/chrome/browser/extensions/signin/gaia_auth_extension_loader.h
@@ -5,9 +5,6 @@
 #ifndef CHROME_BROWSER_EXTENSIONS_SIGNIN_GAIA_AUTH_EXTENSION_LOADER_H_
 #define CHROME_BROWSER_EXTENSIONS_SIGNIN_GAIA_AUTH_EXTENSION_LOADER_H_
 
-#include <map>
-#include <string>
-
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
 #include "extensions/browser/browser_context_keyed_api_factory.h"
@@ -55,9 +52,6 @@ class GaiaAuthExtensionLoader : public BrowserContextKeyedAPI {
   content::BrowserContext* browser_context_;
   int load_count_;
 
-  int last_data_id_;
-  std::map<int, std::string> data_;
-
   base::WeakPtrFactory<GaiaAuthExtensionLoader> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(GaiaAuthExtensionLoader);