Set user-visible machine names and devices types for synced sessions.

chrome/browser/sync/profile_sync_service_session_unittest.cc

Index: chrome/browser/sync/profile_sync_service_session_unittest.cc
diff --git a/chrome/browser/sync/profile_sync_service_session_unittest.cc b/chrome/browser/sync/profile_sync_service_session_unittest.cc
index 5c74b74a989339a898fdf9438899c9d124b691e1..711d490ee7844b1e4208c32592ac1232dd6fd337 100644
--- a/chrome/browser/sync/profile_sync_service_session_unittest.cc
+++ b/chrome/browser/sync/profile_sync_service_session_unittest.cc
@@ -207,6 +207,8 @@ TEST_F(ProfileSyncServiceSessionTest, WriteSessionToNode) {
   ASSERT_EQ(machine_tag, specifics.session_tag());
   ASSERT_TRUE(specifics.has_header());
   const sync_pb::SessionHeader& header_s = specifics.header();
+  ASSERT_TRUE(header_s.has_device_type());
+  ASSERT_TRUE(header_s.client_name().length() > 0);
   ASSERT_EQ(0, header_s.window_size());
 }