Do not use zero or empty android:versionCode

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.
 
 import("//build/config/android/config.gni")
 
 assert(is_android)
 
 
 rebased_android_sdk = rebase_path(android_sdk, root_build_dir)
@@ skipping 234 matching lines @@
   _native_libs_dir = "//build/android/empty/res"
   if (defined(invoker.native_libs_dir)) {
       _native_libs_dir = invoker.native_libs_dir
   }
 
   _asset_location = "//build/android/empty/res"
   if (defined(invoker.asset_location)) {
     _asset_location = invoker.asset_location
   }
 
-  _version_code = "0"
+  _version_code = "1"
   _version_name = "Developer Build"
 
   _base_apk_path = _base_path + ".apk_intermediates"
 
   _resource_packaged_apk_path = _base_apk_path + ".ap_"
   _packaged_apk_path = _base_apk_path + ".unfinished.apk"
 
 
   _configuration_name = "Release"
   if (is_debug) {
@@ skipping 474 matching lines @@
       args += invoker.args
     }
     rebased_sources = rebase_path(sources, root_build_dir)
     args += [ "--files=$rebased_sources" ]
 
     if (defined(invoker.clear_dir) && invoker.clear_dir) {
       args += ["--clear"]
     }
   }
 }