Revert of Upstream Chrome on iOS source code [11/11].

ios/chrome/browser/ui/icons/BUILD.gn

 # 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.
 
 bundle_data("assets") {
   sources = [
     "resources/Icons.xcassets/ic_arrow_back.imageset/Contents.json",
     "resources/Icons.xcassets/ic_arrow_back.imageset/ic_arrow_back.png",
     "resources/Icons.xcassets/ic_arrow_back.imageset/ic_arrow_back_2x.png",
     "resources/Icons.xcassets/ic_arrow_back.imageset/ic_arrow_back_3x.png",
@@ skipping 11 matching lines @@
     "resources/Icons.xcassets/ic_info.imageset/ic_info_3x.png",
     "resources/Icons.xcassets/ic_search.imageset/Contents.json",
     "resources/Icons.xcassets/ic_search.imageset/ic_search.png",
     "resources/Icons.xcassets/ic_search.imageset/ic_search_2x.png",
     "resources/Icons.xcassets/ic_search.imageset/ic_search_3x.png",
   ]
   outputs = [
     "{{bundle_resources_dir}}/{{source_file_part}}",
   ]
 }
-
-source_set("icons") {
-  sources = [
-    "chrome_icon.h",
-    "chrome_icon.mm",
-  ]
-  deps = [
-    "//base",
-    "//ios/chrome/app/strings",
-    "//ios/chrome/browser/ui/icons:assets",
-    "//ui/base",
-  ]
-  libs = [
-    "CoreGraphics.framework",
-    "UIKit.framework",
-  ]
-}
-
-source_set("unit_tests") {
-  testonly = true
-  sources = [
-    "chrome_icon_unittest.mm",
-  ]
-  deps = [
-    ":icons",
-    "//ios/chrome/app/strings",
-    "//testing/gtest",
-    "//third_party/ocmock",
-    "//ui/base",
-  ]
-}