Get generate_dump compiling on Windows

tools/tools.gyp

 # Copyright 2014 The Crashpad Authors. All rights reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at
 #
 #     http://www.apache.org/licenses/LICENSE-2.0
 #
 # Unless required by applicable law or agreed to in writing, software
 # distributed under the License is distributed on an "AS IS" BASIS,
@@ skipping 68 matching lines @@
           'xcode_settings': {
             'OTHER_LDFLAGS': [
               '-sectcreate',
               '__TEXT',
               '__info_plist',
               '<(sectaskaccess_info_plist)'
             ],
           },
         },
         {
-          'target_name': 'generate_dump',
-          'type': 'executable',
-          'dependencies': [
-            'crashpad_tool_support',
-            '../compat/compat.gyp:crashpad_compat',
-            '../minidump/minidump.gyp:crashpad_minidump',
-            '../snapshot/snapshot.gyp:crashpad_snapshot',
-            '../third_party/mini_chromium/mini_chromium.gyp:base',
-            '../util/util.gyp:crashpad_util',
-          ],
-          'include_dirs': [
-            '..',
-          ],
-          'sources': [
-            'generate_dump.cc',
-          ],
-          'xcode_settings': {
-            'OTHER_LDFLAGS': [
-              '-sectcreate',
-              '__TEXT',
-              '__info_plist',
-              '<(sectaskaccess_info_plist)'
-            ],
-          },
-        },
-        {
           'target_name': 'on_demand_service_tool',
           'type': 'executable',
           'dependencies': [
             'crashpad_tool_support',
             '../compat/compat.gyp:crashpad_compat',
             '../third_party/mini_chromium/mini_chromium.gyp:base',
             '../util/util.gyp:crashpad_util',
           ],
           'include_dirs': [
             '..',
@@ skipping 52 matching lines @@
             '../third_party/mini_chromium/mini_chromium.gyp:base',
             '../util/util.gyp:crashpad_util',
           ],
           'include_dirs': [
             '..',
           ],
           'sources': [
             'crashpad_database_util.cc',
           ],
         },
+        {
+          'target_name': 'generate_dump',
+          'type': 'executable',
+          'dependencies': [
+            'crashpad_tool_support',
+            '../compat/compat.gyp:crashpad_compat',
+            '../minidump/minidump.gyp:crashpad_minidump',
+            '../snapshot/snapshot.gyp:crashpad_snapshot',
+            '../third_party/mini_chromium/mini_chromium.gyp:base',
+            '../util/util.gyp:crashpad_util',
+          ],
+          'include_dirs': [
+            '..',
+          ],
+          'sources': [
+            'generate_dump.cc',
+          ],
+          'conditions': [
+            ['OS=="mac"', {
+              'xcode_settings': {
+                'OTHER_LDFLAGS': [
+                  '-sectcreate',
+                  '__TEXT',
+                  '__info_plist',
+                  '<(sectaskaccess_info_plist)'
+                ],
+              },
+            }],
+          ]
+        },
       ],
     }],
   ],
 }