Add copyright headers to remaining gyp files.

gyp/animator.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.
 #Animator is basically Skia's (much saner) version of Flash.
 #On top of Views it provides a declarative UI model which can be updated
 #based on events which trigger changes or scripts.
 
 {
   'targets': [
     {
       'target_name': 'animator',
       'product_name': 'skia_animator',
       'type': 'static_library',
@@ skipping 167 matching lines @@
         '../src/animator/SkXMLAnimatorWriter.h',
       ],
       'direct_dependent_settings': {
         'include_dirs': [
           '../include/animator',
         ],
       },
     },
   ],
 }