Enable crash keys for cast shell on android

chromecast/crash/cast_crash_keys.h

+// 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.
+
+#ifndef CHROMECAST_CRASH_CAST_CRASH_KEYS_H_
+#define CHROMECAST_CRASH_CAST_CRASH_KEYS_H_
+
+#include "base/debug/crash_logging.h"
+
+namespace chromecast {
+namespace crash_keys {
+
+size_t RegisterCastCrashKeys();
+
+extern const char kCurrentApp[];
+extern const char kLastApp[];
+extern const char kPreviousApp[];
+
+}  // namespace chromecast
+}  // namespace crash_keys
+
+#endif  // CHROMECAST_CRASH_CAST_CRASH_KEYS_H_