Change refs from ChromeSigninClient to base SigninClient class.

chrome/browser/signin/chrome_signin_client_factory.h

Index: chrome/browser/signin/chrome_signin_client_factory.h
diff --git a/chrome/browser/signin/chrome_signin_client_factory.h b/chrome/browser/signin/chrome_signin_client_factory.h
index 06a08252499c62f0c7facd6d14a75741a9cc6de9..b1b96f6835aba65dde01128d62767d2e49bf2358 100644
--- a/chrome/browser/signin/chrome_signin_client_factory.h
+++ b/chrome/browser/signin/chrome_signin_client_factory.h
@@ -15,10 +15,10 @@ class Profile;
 // Profiles.
 class ChromeSigninClientFactory : public BrowserContextKeyedServiceFactory {
  public:
-  // Returns the instance of ChromeSigninClient associated with this profile
+  // Returns the instance of SigninClient associated with this profile
   // (creating one if none exists). Returns NULL if this profile cannot have an
-  // ChromeSigninClient (for example, if |profile| is incognito).
-  static ChromeSigninClient* GetForProfile(Profile* profile);
+  // SigninClient (for example, if |profile| is incognito).
+  static SigninClient* GetForProfile(Profile* profile);
 
   // Returns an instance of the factory singleton.
   static ChromeSigninClientFactory* GetInstance();