Add option to export tracing events to ETW.

base/base.gyp

 # Copyright (c) 2012 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.
 
 {
   'variables': {
     'chromium_code': 1,
   },
   'includes': [
     '../build/win_precompile.gypi',
@@ skipping 174 matching lines @@
             },
           },
           'copies': [
             {
               'destination': '<(PRODUCT_DIR)/',
               'files': [
                 '../build/win/dbghelp_xp/dbghelp.dll',
               ],
             },
           ],
+          'dependencies': [
+           'trace_event/etw_manifest/etw_manifest.gyp:etw_manifest',
+          ],
         }],
         ['OS == "mac" or (OS == "ios" and _toolset == "host")', {
           'link_settings': {
             'libraries': [
               '$(SDKROOT)/System/Library/Frameworks/AppKit.framework',
               '$(SDKROOT)/System/Library/Frameworks/ApplicationServices.framework',
               '$(SDKROOT)/System/Library/Frameworks/Carbon.framework',
               '$(SDKROOT)/System/Library/Frameworks/CoreFoundation.framework',
               '$(SDKROOT)/System/Library/Frameworks/Foundation.framework',
               '$(SDKROOT)/System/Library/Frameworks/IOKit.framework',
@@ skipping 1373 matching lines @@
               'dependencies': [
                 '../tools/xdisplaycheck/xdisplaycheck.gyp:xdisplaycheck',
               ],
             }],
           ],
         },
       ],
     }],
   ],
 }