[Android] Guard android_assets usage with enable_java_templates.

BUILD.gn

 # 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("//third_party/icu/config.gni")
 
 if (is_android) {
   import("//build/config/android/rules.gni")
 }
 
@@ skipping 541 matching lines @@
   configs += [ ":icu_code" ]
 
   public_configs = [ ":icu_config" ]
 
   if (is_win || icu_use_data_file) {
     sources += [ "source/stubdata/stubdata.c" ]
     defines += [ "U_ICUDATAENTRY_IN_COMMON" ]
   }
 }
 
-if (is_android) {
+if (is_android && enable_java_templates) {
   android_assets("icu_assets") {
     if (icu_use_data_file) {
       sources = [ "$root_out_dir/icudtl.dat" ]
       deps = [ ":icudata" ]
       disable_compression = true
     }
   }
 }
 
 # TODO(GYP) support use_system_icu.
@@ skipping 57 matching lines @@
         sources = [
           "android/icudtl_dat.S",
         ]
       } else {
         assert(false, "No icu data for this platform")
       }
       defines = [ "U_HIDE_DATA_SYMBOL" ]
     }
   }
 }