[d8] implement console for d8.

BUILD.gn

 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import("//build/config/android/config.gni")
 import("//build/config/arm.gni")
 import("//build/config/dcheck_always_on.gni")
 import("//build/config/mips.gni")
 import("//build/config/sanitizers/sanitizers.gni")
 
@@ skipping 2703 matching lines @@
       ":v8_maybe_snapshot",
     ]
 
     public_configs = [ ":external_config" ]
   }
 }
 
 v8_executable("d8") {
   sources = [
     "$target_gen_dir/d8-js.cc",
+    "src/d8-console.cc",
+    "src/d8-console.h",
     "src/d8.cc",
     "src/d8.h",
   ]
 
   configs = [
     # Note: don't use :internal_config here because this target will get
     # the :external_config applied to it by virtue of depending on :v8, and
     # you can't have both applied to the same target.
     ":internal_config_base",
   ]
@@ skipping 463 matching lines @@
   ]
 
   configs = [
     ":external_config",
     ":internal_config_base",
   ]
 }
 
 v8_fuzzer("wasm_compile_fuzzer") {
 }