DevTools: introduce screencast experiment.

Source/devtools/scripts/compile_frontend.py

 #!/usr/bin/env python
 # Copyright (c) 2012 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 175 matching lines @@
             "CookiesTable.js",
             "DOMBreakpointsSidebarPane.js",
             "DOMPresentationUtils.js",
             "ElementsTreeOutline.js",
             "FontView.js",
             "ImageView.js",
             "NativeBreakpointsSidebarPane.js",
             "InspectElementModeController.js",
             "ObjectPopoverHelper.js",
             "ObjectPropertiesSection.js",
+            "ScreencastView.js",
             "SourceFrame.js",
             "ResourceView.js",
         ]
     },
     {
         "name": "elements",
         "dependencies": ["components"],
         "sources": [
             "CSSNamedFlowCollectionsView.js",
             "CSSNamedFlowView.js",
@@ skipping 271 matching lines @@
     os.system(command)
     os.system("rm " + injectedScriptSourceTmpFile)
     os.system("rm " + injectedScriptCanvasModuleSourceTmpFile)
 
     print "Checking generated code in InjectedScriptCanvasModuleSource.js..."
     check_injected_webgl_calls_command = "%s/check_injected_webgl_calls_info.py %s %s/InjectedScriptCanvasModuleSource.js" % (scripts_path, webgl_rendering_context_idl_path, inspector_path)
     os.system(check_injected_webgl_calls_command)
 
 shutil.rmtree(modules_dir)
 os.system("rm " + protocol_externs_path)