Android: Write all proguard flags to out.jar.flags file

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 748 matching lines @@
       } else {
         inputs += [ android_sdk_jar ]
         _rebased_android_sdk_jar = rebased_android_sdk_jar
       }
       if (defined(invoker.inputs)) {
         inputs += invoker.inputs
       }
       depfile = "${target_gen_dir}/${target_name}.d"
       outputs = [
         _output_jar_path,
+        "$_output_jar_path.flags",
+        "$_output_jar_path.mapping",
         "$_output_jar_path.seeds",
-        "$_output_jar_path.mapping",
         "$_output_jar_path.usage",
       ]
       args = [
         "--depfile",
         rebase_path(depfile, root_build_dir),
         "--proguard-path",
         rebase_path(_proguard_jar_path, root_build_dir),
         "--output-path",
         rebase_path(_output_jar_path, root_build_dir),
         "--classpath",
@@ skipping 2030 matching lines @@
         rebase_path(root_build_dir, root_build_dir),
         "--packed-libraries-dir",
         rebase_path(_packed_libraries_dir, root_build_dir),
         "--libraries=${invoker.libraries_filearg}",
         "--filelistjson",
         rebase_path(invoker.file_list_json, root_build_dir),
       ]
     }
   }
 }