Revert of Refactor BeforeInstallPromptEvent to use ScriptPromiseProperty

Source/modules/modules.gypi

 {
   'includes': [
     '../core/core_generated.gypi',
     'modules_generated.gypi',
   ],
   'variables': {
     # Experimental hooks for embedder to provide extra IDL and source files.
     #
     # Note: this is not a supported API. If you rely on this, you will be broken
     # from time to time as the code generator changes in backward incompatible
@@ skipping 652 matching lines @@
       'accessibility/AXTableColumn.cpp',
       'accessibility/AXTableColumn.h',
       'accessibility/AXTableHeaderContainer.cpp',
       'accessibility/AXTableHeaderContainer.h',
       'accessibility/AXTableRow.cpp',
       'accessibility/AXTableRow.h',
       'accessibility/InspectorAccessibilityAgent.cpp',
       'accessibility/InspectorAccessibilityAgent.h',
       'accessibility/InspectorTypeBuilderHelper.cpp',
       'accessibility/InspectorTypeBuilderHelper.h',
-      'app_banner/AppBannerCallbacks.cpp',
-      'app_banner/AppBannerCallbacks.h',
       'app_banner/AppBannerController.cpp',
       'app_banner/AppBannerController.h',
       'app_banner/AppBannerPromptResult.cpp',
       'app_banner/AppBannerPromptResult.h',
       'app_banner/BeforeInstallPromptEvent.cpp',
       'app_banner/BeforeInstallPromptEvent.h',
       'audio_output_devices/HTMLMediaElementAudioOutputDevice.cpp',
       'audio_output_devices/HTMLMediaElementAudioOutputDevice.h',
       'audio_output_devices/SetSinkIdCallbacks.cpp',
       'audio_output_devices/SetSinkIdCallbacks.h',
@@ skipping 1045 matching lines @@
       'webaudio/AudioBasicProcessorHandlerTest.cpp',
       'webaudio/ConvolverNodeTest.cpp',
       'webaudio/DynamicsCompressorNodeTest.cpp',
       'webaudio/ScriptProcessorNodeTest.cpp',
       'webaudio/StereoPannerNodeTest.cpp',
       'websockets/DOMWebSocketTest.cpp',
       'websockets/DocumentWebSocketChannelTest.cpp',
     ],
   },
 }