cc: Fix draw transform computation for non-drawn layers

cc/cc_tests.gyp

 # Copyright (c) 2012 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 {
   'variables': {
     'chromium_code': 1,
     'cc_unit_tests_source_files': [
       'animation/animation_host_unittest.cc',
       'animation/animation_player_unittest.cc',
@@ skipping 164 matching lines @@
       'test/fake_external_begin_frame_source.h',
       'test/fake_impl_task_runner_provider.h',
       'test/fake_layer_tree_host.cc',
       'test/fake_layer_tree_host.h',
       'test/fake_layer_tree_host_client.cc',
       'test/fake_layer_tree_host_client.h',
       'test/fake_layer_tree_host_impl.cc',
       'test/fake_layer_tree_host_impl.h',
       'test/fake_layer_tree_host_impl_client.cc',
       'test/fake_layer_tree_host_impl_client.h',
+      'test/fake_mask_layer_impl.cc',
+      'test/fake_mask_layer_impl.h',
       'test/fake_output_surface.cc',
       'test/fake_output_surface.h',
       'test/fake_output_surface_client.cc',
       'test/fake_output_surface_client.h',
       'test/fake_painted_scrollbar_layer.cc',
       'test/fake_painted_scrollbar_layer.h',
       'test/fake_picture_layer.cc',
       'test/fake_picture_layer.h',
       'test/fake_picture_layer_impl.cc',
       'test/fake_picture_layer_impl.h',
@@ skipping 271 matching lines @@
                   '../tools/xdisplaycheck/xdisplaycheck.gyp:xdisplaycheck',
                 ],
               }
             ],
           ],
         },
       ],
     }],
   ],
 }