Fix license check error.

cloudwebrtc · cloudwebrtc · commit da077a6fe946 · 2019-07-17T02:58:16.000+08:00
diff --git a/shell/platform/glfw/external_texture_gl.cc b/shell/platform/glfw/external_texture_gl.cc
@@ -1,4 +1,3 @@
-// Copyright 2018 Google LLC
 // Copyright 2013 The Flutter Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.

Original file line number	Diff line number	Diff line change
`@@ -1,4 +1,3 @@`
`1`		`-// Copyright 2018 Google LLC`
`2`	`1`	`// Copyright 2013 The Flutter Authors. All rights reserved.`
`3`	`2`	`// Use of this source code is governed by a BSD-style license that can be`
`4`	`3`	`// found in the LICENSE file.`