Add initial stub implementation of LocalActivityResolver.

components/arc/intent_helper/local_activity_resolver.h

+// Copyright 2016 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 COMPONENTS_ARC_INTENT_HELPER_LOCAL_ACTIVITY_HELPER_H_
+#define COMPONENTS_ARC_INTENT_HELPER_LOCAL_ACTIVITY_HELPER_H_
+
+#include "base/macros.h"
+
+class GURL;
+
+namespace arc {
+
+class LocalActivityResolver {
+ public:
+  LocalActivityResolver() = default;
+  ~LocalActivityResolver() = default;
+
+  bool ShouldChromeHandleUrl(const GURL& url);
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(LocalActivityResolver);
+};
+
+}  // namespace arc
+
+#endif  // COMPONENTS_ARC_INTENT_HELPER_LOCAL_ACTIVITY_HELPER_H_