Add copyright headers to remaining gyp files.
Prevents some PRESUBMIT errors.
TBR=mtklein@google.com
Review URL: https://codereview.chromium.org/1035523003
diff --git a/gyp/opts.gyp b/gyp/opts.gyp
index 6ff9008..a60505e 100644
--- a/gyp/opts.gyp
+++ b/gyp/opts.gyp
@@ -1,3 +1,7 @@
+# Copyright 2015 Google Inc.
+#
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
# Gyp file for building opts target.
{
# Source lists live in opts.gypi. This makes it easier to maintain our Chrome GYP/GN setup.