Get rid of all component builds specific .isolate.

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',
-        ],
-      },
-    }],
-  ],
-}