DO NOT SUBMIT: add main dex list check to classloader.

build/config/android/internal_rules.gni

 # 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.
 
 # Do not add any imports to non-//build directories here.
 # Some projects (e.g. V8) do not have non-build directories DEPS'ed in.
 import("//build_overrides/build.gni")
 import("//build/config/android/config.gni")
 import("//build/config/dcheck_always_on.gni")
 import("//build/config/sanitizers/sanitizers.gni")
@@ skipping 910 matching lines @@
 
   template("dex") {
     set_sources_assignment_filter([])
 
     _enable_multidex =
         defined(invoker.enable_multidex) && invoker.enable_multidex
 
     if (_enable_multidex) {
       _main_dex_list_path = invoker.output + ".main_dex_list"
       _main_dex_list_target_name = "${target_name}__main_dex_list"
+      _gen_main_dex_java_list = false
+      if (defined(invoker.list_output)) {
+        _gen_main_dex_java_list = true
+        _main_dex_list_path_java = invoker.list_output
+      }
       action(_main_dex_list_target_name) {
         forward_variables_from(invoker,
                                [
                                  "deps",
                                  "inputs",
                                  "sources",
                                  "testonly",
                                ])
 
         script = "//build/android/gyp/main_dex_list.py"
@@ skipping 32 matching lines @@
           rebase_path(_proguard_jar_path, root_build_dir),
         ]
 
         if (defined(invoker.extra_main_dex_proguard_config)) {
           inputs += [ invoker.extra_main_dex_proguard_config ]
           args += [
             "--main-dex-rules-path",
             rebase_path(invoker.extra_main_dex_proguard_config, root_build_dir),
           ]
         }
+        if (_gen_main_dex_java_list) {
+          outputs += [ _main_dex_list_path_java ]
+          args += [
+            "--main-dex-list-path-java",
+            rebase_path(_main_dex_list_path_java, root_build_dir),
+          ]
+        }
 
         if (defined(invoker.args)) {
           args += invoker.args
         }
 
         if (defined(invoker.sources)) {
           args += rebase_path(invoker.sources, root_build_dir)
         }
       }
     }
@@ skipping 1799 matching lines @@
         rebase_path(root_build_dir, root_build_dir),
         "--packed-libraries-dir",
         rebase_path(_packed_libraries_dir, root_build_dir),
         "--libraries=${invoker.libraries_filearg}",
         "--filelistjson",
         rebase_path(invoker.file_list_json, root_build_dir),
       ]
     }
   }
 }