Remove blink dependencies from mojo_public_bindings_unittests on ios.

mojo/public/cpp/bindings/tests/BUILD.gn

 # 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.
 
 import("../../../mojo_application.gni")
 
 source_set("tests") {
   testonly = true
 
   sources = [
@@ skipping 41 matching lines @@
     "//mojo/public/cpp/bindings:callback",
     "//mojo/public/cpp/system",
     "//mojo/public/cpp/test_support:test_utils",
     "//mojo/public/interfaces/bindings/tests:test_associated_interfaces",
     "//mojo/public/interfaces/bindings/tests:test_interfaces",
     "//mojo/public/interfaces/bindings/tests:test_interfaces_experimental",
     "//mojo/public/interfaces/bindings/tests:test_interfaces_wtf",
     "//mojo/public/interfaces/bindings/tests:test_struct_traits_interfaces",
     "//testing/gtest",
   ]
+
+  if (is_ios) {
+    sources -= [

[Nico, 2016/04/22 01:46:17]

in gn, we prefer to only add them if they're needed, instead of the
add-always-then-sometimes remove dance

[Sam McNally, 2016/04/22 01:57:43]

That's what I thought, but then I saw
https://chromium.googlesource.com/chromium/src/+/master/tools/gn/docs/cookboo....

+      "pickle_unittest.cc",
+      "struct_traits_unittest.cc",
+    ]
+
+    deps -= [ "//mojo/public/interfaces/bindings/tests:test_interfaces_wtf" ]
+    assert_no_deps = [ "//third_party/WebKit/*" ]
+  }
 }
 
 source_set("for_blink_tests") {
   testonly = true
 
   sources = [
     "array_common_test.h",
     "container_test_util.cc",
     "container_test_util.h",
     "variant_test_util.h",
@@ skipping 47 matching lines @@
 source_set("mojo_public_bindings_test_utils") {
   sources = [
     "validation_test_input_parser.cc",
     "validation_test_input_parser.h",
   ]
 
   deps = [
     "//mojo/public/c/system",
   ]
 }