Ensure that android "release" apps are signed with debug key

platform_tools/android/gyp/skia_android.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.
 
 # This GYP file stores the dependencies necessary to build Skia on the Android
 # platform. The OS doesn't provide many stable libraries as part of the
 # distribution so we have to build a few of them ourselves.
 #
 {
@@ skipping 21 matching lines @@
       }],
       [ 'skia_arch_type == "mips32"', {
         'android_arch%': "mips",
         'android_variant%': "mips",
       }],
       [ 'skia_arch_type == "mips64"', {
         'android_arch%': "mips64",
         'android_variant%': "mips64",
       }],
       [ 'android_buildtype == "Release"', {
-        'android_apk_suffix': "release-unsigned.apk",
+        'android_apk_suffix': "release.apk",
       }, {
         'android_apk_suffix': "debug.apk",
       }],
     ],
   },
   'targets': [
     {
       'target_name': 'CopySampleAppDeps',
       'type': 'none',
       'dependencies': [
@@ skipping 117 matching lines @@
             '<(android_base)/apps/gradlew',
             ':visualbench:assemble<(android_variant)<(android_buildtype)',
             '-p<(android_base)/apps/visualbench',
             '-PsuppressNativeBuild',
           ],
         },
       ],
     },
   ],
 }