Remove dependency on //crypto in //ipc, except on windows.

ipc/ipc.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': [
     'ipc.gypi',
   ],
   'targets': [
     {
       'target_name': 'ipc',
       'type': '<(component)',
       'variables': {
         'ipc_target': 1,
       },
       'dependencies': [
         '../base/base.gyp:base',
         # TODO(viettrungluu): Needed for base/lazy_instance.h, which is suspect.
         '../base/third_party/dynamic_annotations/dynamic_annotations.gyp:dynamic_annotations',
-        '../crypto/crypto.gyp:crypto',
       ],
       # TODO(gregoryd): direct_dependent_settings should be shared with the
       # 64-bit target, but it doesn't work due to a bug in gyp
       'direct_dependent_settings': {
         'include_dirs': [
           '..',
         ],
       },
+      'conditions': [
+        ['OS == "win"', {
+          'dependencies': [
+            '../crypto/crypto.gyp:crypto',
+          ],
+        }],
+      ],
     },
     {
       'target_name': 'ipc_tests',
       'type': '<(gtest_target_type)',
       'dependencies': [
         'ipc',
         'test_support_ipc',
         '../base/base.gyp:base',
         '../base/base.gyp:base_i18n',
         '../base/base.gyp:test_support_base',
+        '../crypto/crypto.gyp:crypto',
         '../testing/gtest.gyp:gtest',
       ],
       'include_dirs': [
         '..'
       ],
       'sources': [
         'attachment_broker_privileged_win_unittest.cc',
         'attachment_broker_unprivileged_win_unittest.cc',
         'ipc_channel_posix_unittest.cc',
         'ipc_channel_proxy_unittest.cc',
@@ skipping 163 matching lines @@
             '../build/isolate.gypi',
           ],
           'sources': [
             'ipc_tests.isolate',
           ],
         },
       ],
     }],
   ],
 }