non_compiled_schema_files should trigger genapi_bundle.

build/json_schema_bundle_compile.gypi

 # 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': {
     # When including this gypi, the following variables must be set:
     #   schema_files: an array of json or idl files that comprise the api model.
     #   cc_dir: path to generated files
     #   root_namespace: the C++ namespace that all generated files go under
@@ skipping 10 matching lines @@
         '<(api_gen_dir)/compiler.py',
         '<(api_gen_dir)/cpp_bundle_generator.py',
         '<(api_gen_dir)/cpp_type_generator.py',
         '<(api_gen_dir)/cpp_util.py',
         '<(api_gen_dir)/h_generator.py',
         '<(api_gen_dir)/idl_schema.py',
         '<(api_gen_dir)/json_schema.py',
         '<(api_gen_dir)/model.py',
         '<(api_gen_dir)/util_cc_helper.py',
         '<@(schema_files)',
+        '<@(non_compiled_schema_files)',
       ],
       'outputs': [
         '<(SHARED_INTERMEDIATE_DIR)/<(cc_dir)/generated_api.h',
         '<(SHARED_INTERMEDIATE_DIR)/<(cc_dir)/generated_api.cc',
         '<(SHARED_INTERMEDIATE_DIR)/<(cc_dir)/generated_schemas.h',
         '<(SHARED_INTERMEDIATE_DIR)/<(cc_dir)/generated_schemas.cc',
       ],
       'action': [
         'python',
         '<(api_gen)',
@@ skipping 14 matching lines @@
   ],
   'direct_dependent_settings': {
     'include_dirs': [
       '<(SHARED_INTERMEDIATE_DIR)',
     ]
   },
   # This target exports a hard dependency because it generates header
   # files.
   'hard_dependency': 1,
 }