Fix the Win64 GN installer config

courgette/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.
 
 import("//testing/test.gni")
 
 static_library("courgette_lib") {
   sources = [
     "adjustment_method.cc",
     "adjustment_method.h",
@@ skipping 90 matching lines @@
       "courgette_minimal_tool.cc",
     ]
 
     deps = [
       ":courgette_lib",
       "//base",
       "//build/config/sanitizers:deps",
       "//build/win:default_exe_manifest",
     ]
   }
+
+  # The official build scripts expect courgette.exe to be in the official build
+  # archives but it's not clear if they really need it, copy courgette64.exe to
+  # courgette.exe to work around this. https://crbug.com/629243
+  if (is_win && current_cpu == "x64") {
+    copy("copy_courgette64_to_courgette") {
+      sources = [
+        "$root_out_dir/courgette64.exe",
+      ]
+      outputs = [
+        "$root_out_dir/courgette.exe",
+      ]
+      deps = [
+        ":courgette",
+      ]
+    }
+  }
 }
 
 test("courgette_unittests") {
   sources = [
     "adjustment_method_unittest.cc",
     "base_test_unittest.cc",
     "base_test_unittest.h",
     "bsdiff_memory_unittest.cc",
     "consecutive_range_visitor_unittest.cc",
     "difference_estimator_unittest.cc",
@@ skipping 40 matching lines @@
     "encoded_program_fuzz_unittest.cc",
   ]
   deps = [
     ":courgette_lib",
     "//base",
     "//base:i18n",
     "//base/test:test_support",
     "//testing/gtest",
   ]
 }