Make net_unittests_run work with component=shared_library.

third_party/nss.isolate

+# Copyright 2014 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.
+#
+# TODO(maruel): this file should live in third_party/nss but two factors get in
+# the way:
+# - .isolate files do not support conditional includes. This works in gyp by
+#   using the 'dependencies': [ 'path/to/file.gyp:project' ] which dynamically
+#   loads project files.
+# - third_party/nss is conditionally checked out. It is not checked out on
+#   linux.
+{
+  'conditions': [
+    ['OS=="mac" and component=="shared_library"', {
+      'variables': {
+        'isolate_dependency_tracked': [
+          '<(PRODUCT_DIR)/libcrnspr.dylib',
+          '<(PRODUCT_DIR)/libcrnss.dylib',
+        ],
+      },
+    }],
+    ['OS=="win" and component=="shared_library"', {
+      'variables': {
+        'isolate_dependency_tracked': [
+          '<(PRODUCT_DIR)/crnspr.dll',
+          '<(PRODUCT_DIR)/crnss.dll',
+        ],
+      },
+    }],
+  ],
+}