Clean up dependencies for disk_cache histogram_macros.h.

net/net.gyp

 # Copyright 2013 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,
 
     'linux_link_kerberos%': 0,
     'use_tracing_cache_backend%': 0,
@@ skipping 439 matching lines @@
         'disk_cache/flash/storage.h',
         'disk_cache/v3/backend_impl_v3.cc',
         'disk_cache/v3/backend_impl_v3.h',
         'disk_cache/v3/block_bitmaps.cc',
         'disk_cache/v3/block_bitmaps.h',
         'disk_cache/v3/disk_format_v3.h',
         'disk_cache/v3/entry_impl_v3.cc',
         'disk_cache/v3/entry_impl_v3.h',
         'disk_cache/v3/eviction_v3.cc',
         'disk_cache/v3/eviction_v3.h',
+        'disk_cache/v3/histogram_macros.h',
         'disk_cache/v3/index_table.cc',
         'disk_cache/v3/index_table.h',
         'dns/address_sorter.h',
         'dns/address_sorter_posix.cc',
         'dns/address_sorter_posix.h',
         'dns/address_sorter_win.cc',
         'dns/dns_client.cc',
         'dns/dns_client.h',
         'dns/dns_config_service.cc',
         'dns/dns_config_service.h',
@@ skipping 2722 matching lines @@
             'net_unittests.isolate',
           ],
           'sources': [
             'net_unittests.isolate',
           ],
         },
       ],
     }],
   ],
 }