Add account_id to signin manager notifications.

components/signin/core/browser/signin_manager_base.h

Index: components/signin/core/browser/signin_manager_base.h
diff --git a/components/signin/core/browser/signin_manager_base.h b/components/signin/core/browser/signin_manager_base.h
index 2d3ca43c44746e7df494708c3c6454e0554cee14..a7a0f9b6feba6082e6fa388588334353c9698182 100644
--- a/components/signin/core/browser/signin_manager_base.h
+++ b/components/signin/core/browser/signin_manager_base.h
@@ -48,11 +48,13 @@ class SigninManagerBase : public KeyedService {
     virtual void GoogleSigninFailed(const GoogleServiceAuthError& error) {}
 
     // Called when a user signs into Google services such as sync.
-    virtual void GoogleSigninSucceeded(const std::string& username,
+    virtual void GoogleSigninSucceeded(const std::string& account_id,
+                                       const std::string& username,
                                        const std::string& password) {}
 
     // Called when the currently signed-in user for a user has been signed out.
-    virtual void GoogleSignedOut(const std::string& username) {}
+    virtual void GoogleSignedOut(const std::string& account_id,
+                                 const std::string& username) {}
 
    protected:
     virtual ~Observer() {}