Remove net & url small, iOS ICU alternatives, unit tests.

url/features.gni

Index: url/features.gni
diff --git a/url/features.gni b/url/features.gni
new file mode 100644
index 0000000000000000000000000000000000000000..fac3ab7e8580a7ad29233c572d5290ffc4337c8c
--- /dev/null
+++ b/url/features.gni
@@ -0,0 +1,10 @@
+# Copyright 2016 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.
+
+# Features used by targets inside and outside of |url|.
+# For details see declare_args() in build/config/BUILDCONFIG.gn.
+declare_args() {
+  # Enables the use of ICU alternatives in lieu of the third-party ICU implementation.

[brettw, 2016/04/04 22:54:11]

This should mention what the scipr of the alternatives is. From the placement of
this, it looks like it only affects url parsing and above, but not blink? That
seems surprising to me, but I guess this is only for cronet. In that case, we
should be explicit about this here.

Also: 80 cols.

[kapishnikov, 2016/04/05 15:22:04]

Done.

+  use_platform_icu_alternatives = false
+}