Remove unused Chromevox classic background script.

chrome/browser/resources/chromeos/chromevox/BUILD.gn

 # Copyright 2015 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("//build/config/features.gni")
 import("//testing/test.gni")
 import("//chrome/test/base/js2gtest.gni")
 import("chromevox.gni")
 
 assert(is_chromeos)
@@ skipping 13 matching lines @@
     "//chrome/third_party/chromevox:chromevox_third_party_resources",
     "//third_party/liblouis",
 
     #<(DEPTH)/third_party/liblouis/liblouis_nacl.gyp:liblouis_nacl_wrapper_nacl'  # TODO(GYP)
     ":chromevox_copied_files",
     ":chromevox_manifest",
     ":chromevox_guest_manifest",
   ]
   if (chromevox_compress_js) {
     deps += [
-      ":chromevox1_background_script",
       ":chromevox1_content_script",
       ":chromevox1_kbexplorer_script",
       ":chromevox1_options_script",
       ":chromevox2_background_script",
     ]
   } else {
     deps += [ ":chromevox_deps_js" ]
   }
 }
 
@@ skipping 104 matching lines @@
     "chromevox/background/options.html",
     "chromevox/injected/api.js",
     "cvox2/background/background.html",
   ]
   if (chromevox_compress_js) {
     sources += [ "chromevox/injected/api_util.js" ]
   } else {
     sources += chromevox_modules
     sources += [
       "closure/closure_preinit.js",
-      chromevox_vars_gypi_values.chromevox1_background_script_loader_file,
       chromevox_vars_gypi_values.chromevox1_content_script_loader_file,
       chromevox_vars_gypi_values.chromevox1_kbexplorer_loader_file,
       chromevox_vars_gypi_values.chromevox1_options_script_loader_file,
       chromevox_vars_gypi_values.chromevox2_background_script_loader_file,
     ]
   }
   if (!chromevox_compress_js) {
     sources += closure_library_modules
   }
   rewrite_rules = [
@@ skipping 81 matching lines @@
   template("compress_js") {
     run_jsbundler(target_name) {
       assert(defined(invoker.output_file))
       mode = "compressed_bundle"
       modules = chromevox_modules + closure_library_modules
       sources = invoker.sources
       output_file = invoker.output_file
     }
   }
 
-  compress_js("chromevox1_background_script") {
-    sources = [
-      chromevox_vars_gypi_values.chromevox1_background_script_loader_file,
-    ]
-    output_file = "$chromevox_out_dir/chromeVoxChromeBackgroundScript.js"
-  }
-
   compress_js("chromevox1_content_script") {
     sources = [
       chromevox_vars_gypi_values.chromevox1_content_script_loader_file,
     ]
     output_file = "$chromevox_out_dir/chromeVoxChromePageScript.js"
   }
 
   compress_js("chromevox1_kbexplorer_script") {
     sources = [
       chromevox_vars_gypi_values.chromevox1_kbexplorer_loader_file,
     ]
     output_file = "$chromevox_out_dir/chromeVoxKbExplorerScript.js"
   }
 
   compress_js("chromevox1_options_script") {
     sources = [
       chromevox_vars_gypi_values.chromevox1_options_script_loader_file,
     ]
     output_file = "$chromevox_out_dir/chromeVoxChromeOptionsScript.js"
   }
 
   compress_js("chromevox2_background_script") {
     sources = [
-      chromevox_vars_gypi_values.chromevox1_background_script_loader_file,
       chromevox_vars_gypi_values.chromevox2_background_script_loader_file,
     ]
     output_file = "$chromevox_out_dir/chromeVox2ChromeBackgroundScript.js"
   }
 } else {
   generate_deps_js("chromevox_deps_js") {
     sources = chromevox_modules + closure_library_modules
     output_file = "$chromevox_out_dir/deps.js"
     rewrite_rules = [
       rebase_path(".", root_build_dir) + ":..",
@@ skipping 88 matching lines @@
 }
 
 js2gtest("chromevox_extjs_tests") {
   test_type = "extension"
   sources = chromevox_tests_gypi_values.chromevox_tests_extjs_sources
   sources -= [ "braille/liblouis_test.extjs" ]  # TODO(GYP)
   gen_include_files =
       chromevox_tests_gypi_values.chromevox_tests_ext_gen_include_sources
   defines = [ "HAS_OUT_OF_PROC_TEST_RUNNER" ]
 }