Disable building unit_tests.exe on DrMemory builders.

build/all.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.
 
 {
   'targets': [
     {
       'target_name': 'All',
       'type': 'none',
       'xcode_create_dependents_test_runner': 1,
@@ skipping 517 matching lines @@
             '../third_party/cacheinvalidation/cacheinvalidation.gyp:cacheinvalidation_unittests',
             '../third_party/libphonenumber/libphonenumber.gyp:libphonenumber_unittests',
             'temp_gyp/googleurl.gyp:googleurl_unittests',
           ],
         },
         {
           'target_name': 'chromium_builder_dbg_drmemory_win',
           'type': 'none',
           'dependencies': [
             '../base/base.gyp:base_unittests',
-            '../chrome/chrome.gyp:unit_tests',
             '../cloud_print/cloud_print.gyp:cloud_print_unittests',
             '../content/content.gyp:content_unittests',
             '../crypto/crypto.gyp:crypto_unittests',
             '../ipc/ipc.gyp:ipc_tests',
             '../jingle/jingle.gyp:jingle_unittests',
             '../media/media.gyp:media_unittests',
             '../net/net.gyp:net_unittests',
             '../printing/printing.gyp:printing_unittests',
             '../remoting/remoting.gyp:remoting_unittests',
             '../sql/sql.gyp:sql_unittests',
@@ skipping 123 matching lines @@
               'dependencies': [
                 '../chromeos/chromeos.gyp:chromeos_unittests',
               ],
             }],
           ],
         },
       ],  # targets
     }], # "use_aura==1"
   ], # conditions
 }