DevTools: Decouple shortcuts from actions, introduce shortcut contexts

Source/devtools/devtools.gypi

 #
 # 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 17 matching lines @@
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #
 
 {
     'variables': {
         # If debug_devtools is set to 1, JavaScript files for DevTools are
         # stored as is. Otherwise, a concatenated file is stored.
         'debug_devtools%': 0,
         'devtools_files': [
             'front_end/inspector.html',
+            'front_end/ActionRegistry.js',
             'front_end/ApplicationCacheModel.js',
             'front_end/BreakpointManager.js',
             'front_end/Checkbox.js',
             'front_end/Color.js',
             'front_end/CompilerScriptMapping.js',
             'front_end/CompletionDictionary.js',
             'front_end/ConsoleModel.js',
             'front_end/ContentProvider.js',
             'front_end/ContentProviderBasedProjectDelegate.js',
             'front_end/ContentProviders.js',
@@ skipping 443 matching lines @@
             'front_end/TempStorageSharedWorker.js',
         ],
         'devtools_script_formatter_worker_js_files': [
             'front_end/CSSFormatter.js',
             'front_end/JavaScriptFormatter.js',
             'front_end/ScriptFormatterWorker.js',
             'front_end/utilities.js',
         ],
     },
 }