Integrate Chrome tracing with V8 (WIP)

tools/gyp/v8.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 866 matching lines @@
         '../../src/vector.h',
         '../../src/version.cc',
         '../../src/version.h',
         '../../src/vm-state-inl.h',
         '../../src/vm-state.h',
         '../../src/zone-inl.h',
         '../../src/zone.cc',
         '../../src/zone.h',
         '../../src/third_party/fdlibm/fdlibm.cc',
         '../../src/third_party/fdlibm/fdlibm.h',
+        '../../src/tracing/trace-event.h',
+        '../../src/tracing/event-tracer.cc',
       ],
       'conditions': [
         ['want_separate_host_toolset==1', {
           'toolsets': ['host', 'target'],
         }, {
           'toolsets': ['target'],
         }],
         ['v8_target_arch=="arm"', {
           'sources': [  ### gcmole(arch:arm) ###
             '../../src/arm/assembler-arm-inl.h',
@@ skipping 855 matching lines @@
         }],
         ['want_separate_host_toolset==1', {
           'toolsets': ['host'],
         }, {
           'toolsets': ['target'],
         }],
       ],
     },
   ],
 }