Fix official build in GN

chrome/common/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("//tools/grit/grit_rule.gni")
 
 gypi_values = exec_script("//build/gypi_to_gn.py",
                           [ rebase_path("../chrome_common.gypi") ],
                           "scope",
                           [ "../chrome_common.gypi" ])
@@ skipping 222 matching lines @@
                            "//chrome")
   }
   if (safe_browsing_mode == 2) {
     defines += [ "MOBILE_SAFE_BROWSING" ]
   }
 }
 
 import("//chrome/version.gni")
 process_version("version") {
   visibility = [ ":common" ]
-  source = "chrome_version_info_values.h.version"
+  template_file = "chrome_version_info_values.h.version"
   output = "$target_gen_dir/chrome_version_info_values.h"
 }
 
 process_version("make_chrome_version") {
-  source = "chrome_version.cc.version"
+  template_file = "chrome_version.cc.version"
   output = "$target_gen_dir/chrome_version.cc"
 }
 
 # GN version: chrome/common_constants.gyp:common_constants
 static_library("constants") {
   sources = [
     "chrome_constants.cc",
     "chrome_constants.h",
     "chrome_icon_resources_win.cc",
     "chrome_icon_resources_win.h",
@@ skipping 57 matching lines @@
 
   configs += [ "//build/config/compiler:no_size_t_to_int_warning" ]
 
   if (enable_extensions) {
     sources += [
       "extensions/extension_test_util.cc",
       "extensions/extension_test_util.h",
     ]
   }
 }