Create a about handler component.

components/about_handler.gypi

Index: components/about_handler.gypi
diff --git a/components/about_handler.gypi b/components/about_handler.gypi
new file mode 100644
index 0000000000000000000000000000000000000000..098061014aa100e1e61d429d5866e41e7a797c6d
--- /dev/null
+++ b/components/about_handler.gypi
@@ -0,0 +1,25 @@
+# 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.
+
+{
+  'targets': [
+    {
+      'target_name': 'about_handler',
+      'type': '<(component)',
+      'dependencies': [
+        '../base/base.gyp:base',
+        '../net/net.gyp:net',
+      ],
+      'include_dirs': [
+        '..',
+      ],
+      'sources': [
+        'about_handler/about_protocol_handler.cc',
+        'about_handler/about_protocol_handler.h',
+        'about_handler/url_request_about_job.cc',
+        'about_handler/url_request_about_job.h',
+      ],
+    },
+  ],
+}