Adding option for Proguard jar to be switched.

chrome/android/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("//build/config/android/config.gni")
 import("//build/config/android/rules.gni")
 import("//build_overrides/v8.gni")
 import("//chrome/android/chrome_public_apk_tmpl.gni")
 import("//chrome/common/features.gni")
 import("//chrome/version.gni")
@@ skipping 543 matching lines @@
     ":chrome_public_test_apk_manifest",
     ":chrome_test_java",
     "//chrome/android/webapk/shell_apk:shell_apk_javatests",
   ]
   additional_apks = [
     "//chrome/android/webapk/shell_apk/javatests/dex_optimizer:dex_optimizer_apk",
     "//chrome/test/android/chrome_public_test_support:chrome_public_test_support_apk",
     "//net/android:net_test_support_apk",
   ]
   isolate_file = "../chrome_public_test_apk.isolate"
-  proguard_enabled = !is_debug
+  proguard_enabled = !is_java_debug
 }
 
 android_library("chrome_sync_shell_test_apk_java") {
   testonly = true
 
   # From java_sources.jni.
   java_files = sync_shell_test_java_sources
 
   deps = [
     "//base:base_java",
@@ skipping 17 matching lines @@
 
 # GYP: //chrome/android/chrome_apk.gyp:chrome_sync_shell_test_apk
 instrumentation_test_apk("chrome_sync_shell_test_apk") {
   apk_name = "ChromeSyncShellTest"
   apk_under_test = ":chrome_sync_shell_apk"
   android_manifest = chrome_sync_shell_test_apk_manifest
   deps = [
     ":chrome_sync_shell_test_apk_java",
     ":chrome_sync_shell_test_apk_manifest",
   ]
-  proguard_enabled = !is_debug
+  proguard_enabled = !is_java_debug
 }