Upgrade Android Gradle plugins

platform_tools/android/gyp/vulkanviewer.gypi

 # Copyright 2015 Google Inc.
 #
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 {
   'targets': [
     {
       'target_name': 'CopyVulkanViewerDeps',
       'type': 'none',
       'dependencies': [
@@ skipping 35 matching lines @@
               'inputs': [
                 '<(android_base)/apps/vulkanviewer/src/main/libs/<(android_arch)/libskia_android.so',
               ],
             }],
           ],
           'outputs': [
             '../apps/vulkanviewer/build/outputs/apk/',
           ],
           'action': [
             '<(android_base)/apps/gradlew',
-            ':vulkanviewer:assemble<(android_variant)Debug',
+            ':vulkanviewer:assemble<(android_variant)<(android_buildtype)',
             '-p<(android_base)/apps/vulkanviewer',
             '-PsuppressNativeBuild',
             '--daemon',
           ],
         },
       ],
     },
   ],
 }