[DevTools] Move emulated devices to separate module.

Source/devtools/scripts/concatenate_application_code.py

 #!/usr/bin/env python
 #
 # Copyright 2014 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.
 
 """
 Release:
   - Concatenates autostart modules, application modules' module.json descriptors,
     and the application loader into a single script.
@@ skipping 196 matching lines @@
         output.write(self.descriptors.application_json())
         output.write(';\n/* Core resources */\n')
         self._write_module_resources(self.core_resource_names(), output)
         output.write('\n/* Application loader */\n')
         output.write(read_file(join(self.application_dir, self.app_file('js'))))
 
     def _concatenate_dynamic_module(self, module_name):
         module = self.descriptors.modules[module_name]
         scripts = module.get('scripts')
         resources = self.descriptors.module_resources(module_name)
-        if not scripts and not resources:
-            return
         module_dir = join(self.application_dir, module_name)
         output = StringIO()
         if scripts:
             modular_build.concatenate_scripts(scripts, module_dir, self.output_dir, output)
         if resources:
             self._write_module_resources(resources, output)
         output_file_path = concatenated_module_filename(module_name, self.output_dir)
         write_file(output_file_path, minify_js(output.getvalue()))
         output.close()
 
@@ skipping 43 matching lines @@
         symlink_or_copy_file(join(os.getcwd(), self.application_dir, html_name), join(self.output_dir, html_name), True)
 
 
 def build_application(application_name, loader, application_dir, output_dir, release_mode):
     descriptors = loader.load_application(application_name + '.json')
     if release_mode:
         builder = ReleaseBuilder(application_name, descriptors, application_dir, output_dir)
     else:
         builder = DebugBuilder(application_name, descriptors, application_dir, output_dir)
     builder.build_app()