Implement tracing interface for v8

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/mips.gni")
 import("//build/config/sanitizers/sanitizers.gni")
 
 if (is_android) {
@@ skipping 1250 matching lines @@
     "src/startup-data-util.cc",
     "src/string-builder.cc",
     "src/string-builder.h",
     "src/string-search.h",
     "src/string-stream.cc",
     "src/string-stream.h",
     "src/strtod.cc",
     "src/strtod.h",
     "src/token.cc",
     "src/token.h",
+    "src/tracing/trace-event.h",

[jochen (gone - plz use gerrit), 2015/11/26 13:28:35]

the cc file needs to be added here as well

[fmeawad, 2015/11/26 15:48:21]

Done.

     "src/transitions-inl.h",
     "src/transitions.cc",
     "src/transitions.h",
     "src/type-cache.cc",
     "src/type-cache.h",
     "src/type-feedback-vector-inl.h",
     "src/type-feedback-vector.cc",
     "src/type-feedback-vector.h",
     "src/type-info.cc",
     "src/type-info.h",
@@ skipping 587 matching lines @@
     if (!is_component_build) {
       sources += [
         "$target_gen_dir/d8-js.cc",
       ]
     }
     if (v8_enable_i18n_support) {
       deps += [ "//third_party/icu" ]
     }
   }
 }