Add histogram to track number of .nexe launches, normalized against opening n...

base/base.gypi

 # Copyright (c) 2010 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.
 
 {
   'target_defaults': {
     'variables': {
       'base_target': 0,
       'base_extra_target': 0,
     },
@@ skipping 130 matching lines @@
           'message_loop_proxy_impl.cc',
           'message_loop_proxy_impl.h',
           'message_pump.cc',
           'message_pump.h',
           'message_pump_default.cc',
           'message_pump_default.h',
           'message_pump_win.cc',
           'message_pump_win.h',
           'metrics/histogram.cc',
           'metrics/histogram.h',
+          'metrics/nacl_histogram.cc',
+          'metrics/nacl_histogram.h',             
           'metrics/stats_counters.cc',
           'metrics/stats_counters.h',
           'metrics/stats_table.cc',
           'metrics/stats_table.h',
           'mime_util.h',
           'mime_util_xdg.cc',
           'move.h',
           'native_library.h',
           'native_library_linux.cc',
           'native_library_mac.mm',
@@ skipping 641 matching lines @@
             'third_party/xdg_mime/xdgmimemagic.c',
             'third_party/xdg_mime/xdgmimemagic.h',
             'third_party/xdg_mime/xdgmimeparent.c',
             'third_party/xdg_mime/xdgmimeparent.h',
           ],
         },
       ],
     }],
   ],
 }