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

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

Index: ios/chrome/browser/ui/collection_view/BUILD.gn
diff --git a/ios/chrome/browser/ui/collection_view/BUILD.gn b/ios/chrome/browser/ui/collection_view/BUILD.gn
deleted file mode 100644
index 0aafb010ec30de71e0233850f980ed92177cfdc8..0000000000000000000000000000000000000000
--- a/ios/chrome/browser/ui/collection_view/BUILD.gn
+++ /dev/null
@@ -1,54 +0,0 @@
-# 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.
-
-source_set("collection_view") {
-  sources = [
-    "collection_view_controller.h",
-    "collection_view_controller.mm",
-    "collection_view_model.h",
-    "collection_view_model.mm",
-  ]
-  deps = [
-    "//base",
-    "//ios/chrome/browser/ui/material_components",
-  ]
-  public_deps = [
-    "//ios/chrome/browser/ui/collection_view/cells",
-    "//ios/third_party/material_components_ios",
-  ]
-}
-
-source_set("test_support") {
-  testonly = true
-  sources = [
-    "collection_view_controller_test.h",
-    "collection_view_controller_test.mm",
-  ]
-  deps = [
-    ":collection_view",
-    "//base",
-    "//ios/chrome/browser/ui/collection_view/cells",
-    "//ios/chrome/test:test_support",
-    "//ios/third_party/material_components_ios",
-    "//testing/gtest",
-    "//ui/base",
-  ]
-}
-
-source_set("unit_tests") {
-  testonly = true
-  sources = [
-    "collection_view_controller_unittest.mm",
-    "collection_view_model_unittest.mm",
-  ]
-  deps = [
-    ":collection_view",
-    "//base",
-    "//ios/chrome/browser/ui/collection_view/cells",
-    "//ios/chrome/test:test_support",
-    "//ios/chrome/test/base",
-    "//ios/third_party/material_components_ios",
-    "//testing/gtest",
-  ]
-}