Move elide_url to its own component

ui/secure_display/secure_display.gyp

+# Copyright (c) 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.
+
+{
+  'variables': {
+    'chromium_code': 1,
+  },
+  'targets': [
+    {
+      # GN version: //ui/secure_display
+      'target_name': 'secure_display',
+      'type': '<(component)',
+      'dependencies': [
+        '../../base/base.gyp:base',
+        # '../../base:strings',
+        '../../net/net.gyp:net',
+        '../../url/url.gyp:url_lib',
+        '../gfx/gfx.gyp:gfx',
+      ],
+      'defines': [
+        'SECURE_DISPLAY_IMPLEMENTATION',
+      ],
+      'sources': [
+        # Note: file list duplicated in GN build.
+        'elide_url.h',
+        'elide_url.cc',
+      ]
+    },
+    {
+      # GN version: //ui/message_center:message_center_unittests
+      'target_name': 'secure_display_unittests',
+      'type': 'executable',
+      'dependencies': [
+        '../../base/base.gyp:base',
+        '../../base/base.gyp:test_support_base',
+        '../../testing/gtest.gyp:gtest',
+        'secure_display',
+      ],
+      'sources': [
+        'elide_url_unittest.cc',
+        'test/run_all_unittests.cc',
+      ]
+    }
+  ]
+}
+