Disable access to secondary dex files.

build/config/android/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/config/android/config.gni")
 import("//build/config/android/internal_rules.gni")
 import("//build/config/compiler/compiler.gni")
 import("//build/config/dcheck_always_on.gni")
@@ skipping 1731 matching lines @@
           ":$build_config_target",
         ]
 
         defines = []
         if (enable_multidex) {
           defines += [ "ENABLE_MULTIDEX" ]
         }
         if (is_java_debug || dcheck_always_on) {
           defines += [ "_DCHECK_IS_ON" ]
         }
+        if (is_official_build) {
+          defines += [ "IS_OFFICIAL_BUILD" ]
+        }
         defines += [
           "COMPRESSED_LOCALE_LIST=" +
               "@FileArg($_rebased_build_config:compressed_locales_java_list)",
           "UNCOMPRESSED_LOCALE_LIST=" +
               "@FileArg($_rebased_build_config:uncompressed_locales_java_list)",
         ]
       }
       _srcjar_deps += [ ":${_template_name}__build_config_java" ]
     }
 
@@ skipping 1009 matching lines @@
         # because in practice they seem to contain classes required to be in the
         # classpath.
         deps += _subjar_targets
       }
       if (defined(_res_target_name)) {
         deps += [ ":$_res_target_name" ]
       }
     }
   }
 }