Assert that the chosen Android config is safe.

build/config/compiler/compiler.gni

 # 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/android/config.gni")
 import("//build/config/chrome_build.gni")
 import("//build/config/chromecast_build.gni")
 import("//build/config/sanitizers/sanitizers.gni")
 import("//build/toolchain/goma.gni")
 import("//build/toolchain/toolchain.gni")
@@ skipping 84 matching lines @@
     # Mac and Windows have them separate, so in Release Linux, default them off,
     # but keep them on for Official builds and Chromecast builds.
     symbol_level = 2
   } else if (using_sanitizer) {
     # Sanitizers require symbols for filename suppressions to work.
     symbol_level = 1
   } else {
     symbol_level = 0
   }
 }
+
+# Assert that the configuration isn't going to hit https://crbug.com/648948.
+assert(!is_android || android_64bit_target_cpu || is_component_build ||
+           symbol_level < 2,
+       "Android 32-bit non-component builds cannot have symbol_level=2 " +
+           "due to 4GiB file size limit, see https://crbug.com/648948")