Download updates automatically, ask to install from a modeless dialog

adblockplus.gyp

 {
   'includes': ['defaults.gypi'],
 
   'variables': {
     'build_type%': 'devbuild',
     'build_version%': '',
     'shared_files': [
       'src/shared/AutoHandle.cpp',
       'src/shared/Communication.cpp',
       'src/shared/Dictionary.cpp',
@@ skipping 27 matching lines @@
 
   'targets': [{
     'target_name': 'AdblockPlusEngine',
     'type': 'executable',
     'dependencies': [
       'libadblockplus/libadblockplus.gyp:libadblockplus',
     ],
     'sources': [
       'src/engine/main.cpp',
       'src/engine/Debug.cpp',
+      'src/engine/UpdateInstallDialog.cpp',
       'src/engine/Updater.cpp',
       'src/engine/engine.rc',
       '<@(shared_files)',
     ],
     'libraries': [
       '-ladvapi32',
       '-lole32',
       '-luser32',
       '-lshell32',
       '-lshlwapi',
@@ skipping 101 matching lines @@
       'libraries': ['-ladvapi32', '-lshell32', '-lole32'],
     },
     'msvs_settings': {
       'VCLinkerTool': {
         'SubSystem': '1',   # Console
         'EntryPointSymbol': 'mainCRTStartup',
       },
     },
   }]
 }