Split apart the PPAPI GN targets

ppapi/examples/BUILD.gn

Index: ppapi/examples/BUILD.gn
diff --git a/testing/legion/__init__.py b/ppapi/examples/BUILD.gn
similarity index 65%
copy from testing/legion/__init__.py
copy to ppapi/examples/BUILD.gn
index 50b23dff631dbfd12f490f20fe2a2871179b73b9..1c20c4a83eb5ebbfb6b45627da678b14793768b0 100644
--- a/testing/legion/__init__.py
+++ b/ppapi/examples/BUILD.gn
@@ -1,3 +1,10 @@
 # Copyright 2015 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.
+# found in the LICENSE file.
+
+group("examples") {
+  testonly = true
+  deps = [
+    "//ppapi/examples/audio",
+  ]
+}