Move final vector icons out of ui/gfx/vector_icons/ and remove the

ui/vector_icons/vector_icons.gni

 # 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.
 
 # Creates an action that aggregates vector icon files (.icon) into a C++ file.
 # In addition to running the action, the outputs should be added to another
 # target's sources for compilation.
 #
 # Parameters
 #
@@ skipping 13 matching lines @@
 template("aggregate_vector_icons") {
   assert(defined(invoker.icons),
          "Need icons in $target_name listing the icon files.")
   assert(
       defined(invoker.icon_directory),
       "Need icon_directory in $target_name where the icons and templates live.")
 
   action(target_name) {
     visibility = [ ":*" ]
 
-    script = "//ui/gfx/vector_icons/aggregate_vector_icons.py"
+    script = "//ui/vector_icons/aggregate_vector_icons.py"
 
     output_cc = "$target_gen_dir/vector_icons.cc"
     output_h = "$target_gen_dir/vector_icons.h"
 
     templates = [
       "vector_icons.cc.template",
       "vector_icons.h.template",
     ]
     inputs = rebase_path(templates + invoker.icons, ".", invoker.icon_directory)
 
     outputs = [
       output_cc,
       output_h,
     ]
 
     response_file_contents =
         rebase_path(invoker.icons, root_build_dir, invoker.icon_directory)
 
     args = [
       "--working_directory=" + rebase_path(invoker.icon_directory),
       "--file_list={{response_file_name}}",
       "--output_cc=" + rebase_path(output_cc, root_build_dir),
       "--output_h=" + rebase_path(output_h, root_build_dir),
     ]
   }
 }