Move views vector icons from source_set to part of views target.

ui/views/resources/vector_icons/vector_icons.cc.template

Index: ui/views/resources/vector_icons/vector_icons.cc.template
diff --git a/ui/views/resources/vector_icons/vector_icons.cc.template b/ui/views/resources/vector_icons/vector_icons.cc.template
deleted file mode 100644
index 2423023ea69ef83d942276619aeaf42f802aa564..0000000000000000000000000000000000000000
--- a/ui/views/resources/vector_icons/vector_icons.cc.template
+++ /dev/null
@@ -1,25 +0,0 @@
-// Copyright 2017 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.
-
-// vector_icons.cc.template is used to generate vector_icons.cc. Edit the former
-// rather than the latter.
-
-#include "ui/views/resources/vector_icons/vector_icons.h"
-
-#include "base/logging.h"
-#include "ui/gfx/vector_icon_types.h"
-
-#define PATH_ELEMENT_TEMPLATE(path_name, ...) \
-static constexpr gfx::PathElement path_name[] = {__VA_ARGS__};
-
-#define VECTOR_ICON_TEMPLATE(icon_name, path_name, path_name_1x) \
-const gfx::VectorIcon icon_name = { path_name , path_name_1x };
-
-namespace views {
-
-using namespace gfx;
-
-TEMPLATE_PLACEHOLDER
-
-}