Partially componentize chrome/common/crash_keys.

components/crash_keys.gypi

+# Copyright 2015 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': [
+    {
+      # GN version: //components/crash_keys
+      'target_name': 'crash_keys',
+      'type': 'static_library',
+      'include_dirs': [
+        '..',
+      ],
+      'dependencies': [
+        # List of dependencies is intentionally very minimal. Please avoid
+        # adding extra dependencies without first checking with OWNERS.
+        '../base/base.gyp:base',
+      ],
+      'sources': [
+        'crash_keys/crash_keys.cc',
+        'crash_keys/crash_keys.h',
+      ],
+    },
+  ],
+  'conditions': [
+    ['OS=="win" and target_arch=="ia32"', {
+      'targets': [
+        {
+          'target_name': 'crash_keys_win64',
+          'type': 'static_library',
+          'sources': [
+            'crash_keys/crash_keys.cc',
+            'crash_keys/crash_keys.h',
+          ],
+          'dependencies': [
+            '../base/base.gyp:base_win64',
+          ],
+          'configurations': {
+            'Common_Base': {
+              'msvs_target_platform': 'x64',
+            },
+          },
+        },
+      ],
+    }],
+  ],
+}