DevTools: Handle the F8 shortcut forwarded from the inspected page

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 64 matching lines @@
             'front_end/ExtensionServerProxy.js',
             'front_end/FileManager.js',
             'front_end/FileSystemMapping.js',
             'front_end/FileSystemModel.js',
             'front_end/FileSystemWorkspaceBinding.js',
             'front_end/FileUtils.js',
             'front_end/FilterBar.js',
             'front_end/FilterSuggestionBuilder.js',
             'front_end/FlameChart.js',
             'front_end/FontView.js',
+            'front_end/ForwardedInputEventHandler.js',
             'front_end/Geometry.js',
             'front_end/GoToLineDialog.js',
             'front_end/HAREntry.js',
             'front_end/HandlerRegistry.js',
             'front_end/HelpScreen.js',
             'front_end/HelpScreenUntilReload.js',
             'front_end/ImageView.js',
             'front_end/IndexedDBModel.js',
             'front_end/InplaceEditor.js',
             'front_end/InplaceFormatterEditorAction.js',
@@ skipping 394 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',
         ],
     },
 }