DevTools: Move jsdifflib to "sources", extract "toolbox" module

Source/devtools/devtools.gyp

 #
 # Copyright (C) 2013 Google Inc. All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #         * Redistributions of source code must retain the above copyright
 # notice, this list of conditions and the following disclaimer.
 #         * Redistributions in binary form must reproduce the above
@@ skipping 302 matching lines @@
                                 '<@(devtools_sdk_js_files)',
                             ],
                         },
                         {
                             'destination': '<(PRODUCT_DIR)/resources/inspector/ui',
                             'files': [
                                 '<@(devtools_ui_js_files)',
                             ],
                         },
                         {
+                            'destination': '<(PRODUCT_DIR)/resources/inspector/toolbox',
+                            'files': [
+                                '<@(devtools_toolbox_js_files)',
+                            ],
+                        },
+                        {
                             'destination': '<(PRODUCT_DIR)/resources/inspector/main',
                             'files': [
                                 '<@(devtools_main_js_files)',
                                 'front_end/main/module.json',
                             ],
                         },
                     ]
                 }]
             ]
         },
@@ skipping 571 matching lines @@
                             '<@(devtools_module_json_files)',
                         ],
                         'outputs': ['<(blink_devtools_output_dir)/common/modules.js'],
                         'action': ['python', '<@(_script_name)', '<@(_input_file)', '<@(_outputs)', '<@(devtools_module_json_files)'],
                     }],
                 },
             ],
         }],
     ], # conditions
 }