Add a snapshot of flutter/engine/src/build to our sdk

build/android/tests/symbolize/a.cc

Index: build/android/tests/symbolize/a.cc
diff --git a/build/android/tests/symbolize/a.cc b/build/android/tests/symbolize/a.cc
new file mode 100644
index 0000000000000000000000000000000000000000..f0c7ca4c67f4b3c394c5592918335a7053834b5a
--- /dev/null
+++ b/build/android/tests/symbolize/a.cc
@@ -0,0 +1,14 @@
+// Copyright 2013 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.
+
+class A {
+ public:
+  A();
+  void Foo(int i);
+  void Bar(const char* c);
+};
+
+A::A() {}
+void A::Foo(int i) {}
+void A::Bar(const char* c) {}