Implementation of SigninClient::GetSigninScopedDeviceId

components/signin/core/common/signin_pref_names.cc

Index: components/signin/core/common/signin_pref_names.cc
diff --git a/components/signin/core/common/signin_pref_names.cc b/components/signin/core/common/signin_pref_names.cc
index 2a749d83a4b4e38722a39795bee3667729e8d3aa..c90c08bdd02e2386d311686a9091389cf6383809 100644
--- a/components/signin/core/common/signin_pref_names.cc
+++ b/components/signin/core/common/signin_pref_names.cc
@@ -23,6 +23,12 @@ const char kGoogleServicesUserAccountId[] = "google.services.user_account_id";
 // services.
 const char kGoogleServicesUsername[] = "google.services.username";
 
+// Device id scoped to single signin. This device id will be regenerated if user
+// signs out and signs back in. When refresh token is requested for this user it
+// will be annotated with this device id.
+const char kGoogleServicesSigninScopedDeviceId[] =
+    "google.services.signin_scoped_device_id";
+
 // Local state pref containing a string regex that restricts which accounts
 // can be used to log in to chrome (e.g. "*@google.com"). If missing or blank,
 // all accounts are allowed (no restrictions).