Implementation of SigninClient::GetSigninScopedDeviceId

components/signin/core/browser/signin_client.h

Index: components/signin/core/browser/signin_client.h
diff --git a/components/signin/core/browser/signin_client.h b/components/signin/core/browser/signin_client.h
index c92aeba9559fee8c74b92fcbd036d19df8260aa7..8668ab629781d5af3ce3d60fdb5d7bcadd0cfe5f 100644
--- a/components/signin/core/browser/signin_client.h
+++ b/components/signin/core/browser/signin_client.h
@@ -50,6 +50,10 @@ class SigninClient : public KeyedService {
   // this device id.
   virtual std::string GetSigninScopedDeviceId() = 0;
 
+  // Clears signin scoped device id. This happens when user signs out or about
+  // to sign in.
+  virtual void ClearSigninScopedDeviceId() = 0;
+
   // Returns the URL request context information associated with the client.
   virtual net::URLRequestContextGetter* GetURLRequestContext() = 0;