[d8] implement console for d8.

src/d8.gyp

 # Copyright 2012 the V8 project authors. 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
 #       copyright notice, this list of conditions and the following
 #       disclaimer in the documentation and/or other materials provided
@@ skipping 32 matching lines @@
         'v8.gyp:v8_libplatform',
       ],
       # Generated source files need this explicitly:
       'include_dirs+': [
         '..',
         '<(DEPTH)',
       ],
       'sources': [
         'd8.h',
         'd8.cc',
+        'd8-console.h',
+        'd8-console.cc',
         '<(SHARED_INTERMEDIATE_DIR)/d8-js.cc',
       ],
       'conditions': [
         [ 'want_separate_host_toolset==1', {
           'toolsets': [ 'target', ],
           'dependencies': [
             'd8_js2c#host',
           ],
         }, {
           'dependencies': [
@@ skipping 87 matching lines @@
             '../gypfiles/isolate.gypi',
           ],
           'sources': [
             'd8.isolate',
           ],
         },
       ],
     }],
   ],
 }