Remove wtf/Functional.h

sky/engine/wtf/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.
 
 visibility = ["//sky/*"]
 
 component("wtf") {
   sources = [
     "ASCIICType.h",
     "AddressSpaceRandomization.cpp",
@@ skipping 216 matching lines @@
 }
 
 test("unittests") {
   output_name = "sky_wtf_unittests"
 
   sources = [
     "ArrayBufferBuilderTest.cpp",
     "CheckedArithmeticTest.cpp",
     "DequeTest.cpp",
     "DoubleBufferedDequeTest.cpp",
-    "FunctionalTest.cpp",
     "HashMapTest.cpp",
     "HashSetTest.cpp",
     "ListHashSetTest.cpp",
     "MathExtrasTest.cpp",
     "PartitionAllocTest.cpp",
     "RefPtrTest.cpp",
     "SaturatedArithmeticTest.cpp",
     "StringExtrasTest.cpp",
     "StringHasherTest.cpp",
     "TemporaryChangeTest.cpp",
@@ skipping 38 matching lines @@
 
   configs += [
     "//sky/engine:config",
     "//sky/engine:non_test_config",
   ]
 
   deps = [
     ":wtf",
   ]
 }