Extract CSPDirectiveList from ContentSecurityPolicy.

Source/core/core.gypi

 {
     'variables': {
         # Files for which bindings (.cpp and .h files) will be generated
         'core_idl_files': [
             'animation/Animation.idl',
             'animation/Player.idl',
             'animation/TimedItem.idl',
             'animation/Timeline.idl',
             'animation/Timing.idl',
             'clipboard/Clipboard.idl',
@@ skipping 1075 matching lines @@
             'frame/NavigatorOnLine.h',
             'frame/PageConsole.cpp',
             'frame/Screen.cpp',
             'frame/Screen.h',
             'frame/Settings.cpp',
             'frame/SettingsDelegate.cpp',
             'frame/SettingsDelegate.h',
             'frame/SuspendableTimer.cpp',
             'frame/SuspendableTimer.h',
             'frame/UseCounter.cpp',
+            'frame/csp/CSPDirectiveList.cpp',
             'frame/csp/CSPSource.cpp',
             'frame/csp/CSPSourceList.cpp',
             'frame/csp/MediaListDirective.cpp',
             'frame/csp/SourceListDirective.cpp',
             'inspector/AsyncCallStackTracker.cpp',
             'inspector/AsyncCallStackTracker.h',
             'inspector/BindingVisitors.h',
             'inspector/ConsoleAPITypes.h',
             'inspector/ConsoleMessage.cpp',
             'inspector/ConsoleMessage.h',
@@ skipping 2181 matching lines @@
             'html/parser/HTMLParserThreadTest.cpp',
             'html/track/vtt/BufferedLineReaderTest.cpp',
             'html/track/vtt/VTTScannerTest.cpp',
             'rendering/RenderOverflowTest.cpp',
             'rendering/shapes/BoxShapeTest.cpp',
             'testing/UnitTestHelpers.cpp',
             'testing/UnitTestHelpers.h',
         ],
     }
 }