ppapi: add AudioEncode example

ppapi/ppapi_tests.gypi

 # Copyright (c) 2012 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.
 
 {
   'targets': [
     {
       # GN version: //ppapi:ppapi_tests
       'target_name': 'ppapi_tests',
       'type': 'loadable_module',
@@ skipping 333 matching lines @@
       'target_name': 'ppapi_example_audio',
       'dependencies': [
         'ppapi_example_skeleton',
         'ppapi.gyp:ppapi_cpp',
       ],
       'sources': [
         'examples/audio/audio.cc',
       ],
     },
     {
+      'target_name': 'ppapi_example_audio_encode',
+      'dependencies': [
+        'ppapi_example_skeleton',
+        'ppapi.gyp:ppapi_cpp',
+      ],
+      'sources': [
+        'examples/audio_encode/audio_encode.cc',
+      ],
+    },
+    {
       # GN version: //ppapi/examples/audio_input
       'target_name': 'ppapi_example_audio_input',
       'dependencies': [
         'ppapi_example_skeleton',
         'ppapi.gyp:ppapi_cpp',
       ],
       'sources': [
         'examples/audio_input/audio_input.cc',
       ],
     },
@@ skipping 302 matching lines @@
       'sources': [
         'examples/compositor/compositor.cc',
         'examples/compositor/spinning_cube.cc',
         'examples/compositor/spinning_cube.h',
       ],
     },
     # Adding a new PPAPI example? Don't forget to update the GN build.
     # See //ppapi/examples/BUILD.gn
   ],
 }