Add copyright headers to remaining gyp files.

gyp/views_animated.gyp

+# Copyright 2015 Google Inc.
+#
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
 #Animated widgets are views which use animator.
 
 {
   'targets': [
     {
       'target_name': 'views_animated',
       'type': 'static_library',
       'dependencies': [
         'skia_lib.gyp:skia_lib',
         'animator.gyp:*',
@@ skipping 44 matching lines @@
         }],
       ],
       'direct_dependent_settings': {
         'include_dirs': [
           '../include/views/animated',
         ],
       },
     },
   ],
 }