Use mojo typemaps to simplify arc::IntentFilter::IntentFilter()

components/arc/intent_helper/intent_filter_struct_traits.h

Index: components/arc/intent_helper/intent_filter_struct_traits.h
diff --git a/components/arc/intent_helper/intent_filter_struct_traits.h b/components/arc/intent_helper/intent_filter_struct_traits.h
new file mode 100644
index 0000000000000000000000000000000000000000..ca9ba9c1dc93c4c42f72542825d13402d67079a1
--- /dev/null
+++ b/components/arc/intent_helper/intent_filter_struct_traits.h
@@ -0,0 +1,79 @@
+// 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 COMPONENT_ARC_INTENT_FILTER_INTENT_FILTER_STRUCT_TRAITS_H_
+#define COMPONENT_ARC_INTENT_FILTER_INTENT_FILTER_STRUCT_TRAITS_H_
+
+#include "components/arc/common/intent_helper.mojom.h"
+#include "components/arc/intent_helper/intent_filter.h"
+
+namespace mojo {
+
+template <>
+struct StructTraits<arc::mojom::IntentFilterDataView, arc::IntentFilter> {
+  static const mojo::CArray<std::string> actions(const arc::IntentFilter& r) {
+    // Returns an empty array.
+    return mojo::CArray<std::string>();
+  }
+  static const mojo::CArray<std::string> categories(
+      const arc::IntentFilter& r) {
+    // Returns an empty array.
+    return mojo::CArray<std::string>();
+  }
+  static const mojo::CArray<std::string> data_schemes(
+      const arc::IntentFilter& r) {
+    // Returns an empty array.
+    return mojo::CArray<std::string>();
+  }
+  static const std::vector<arc::IntentFilter::AuthorityEntry>& data_authorities(
+      const arc::IntentFilter& r) {
+    return r.authorities();
+  }
+  static const std::vector<arc::IntentFilter::PatternMatcher>& data_paths(
+      const arc::IntentFilter& r) {
+    return r.paths();
+  }
+  static const mojo::CArray<arc::IntentFilter::PatternMatcher>
+  deprecated_data_scheme_specific_parts(const arc::IntentFilter& r) {
+    // Returns an empty array.
+    return mojo::CArray<arc::IntentFilter::PatternMatcher>();
+  }
+
+  static bool Read(arc::mojom::IntentFilterDataView data,
+                   arc::IntentFilter* out);
+};
+
+template <>
+struct StructTraits<arc::mojom::AuthorityEntryDataView,
+                    arc::IntentFilter::AuthorityEntry> {
+  static const std::string& host(const arc::IntentFilter::AuthorityEntry& r) {
+    return r.host();
+  }
+  static int32_t port(const arc::IntentFilter::AuthorityEntry& r) {
+    return r.port();
+  }
+
+  static bool Read(arc::mojom::AuthorityEntryDataView data,
+                   arc::IntentFilter::AuthorityEntry* out);
+};
+
+template <>
+struct StructTraits<arc::mojom::PatternMatcherDataView,
+                    arc::IntentFilter::PatternMatcher> {
+  static const std::string& pattern(
+      const arc::IntentFilter::PatternMatcher& r) {
+    return r.pattern();
+  }
+  static arc::mojom::PatternType type(
+      const arc::IntentFilter::PatternMatcher& r) {
+    return r.match_type();
+  }
+
+  static bool Read(arc::mojom::PatternMatcherDataView data,
+                   arc::IntentFilter::PatternMatcher* out);
+};
+
+}  // namespace mojo
+
+#endif  // COMPONENT_ARC_INTENT_FILTER_INTENT_FILTER_STRUCT_TRAITS_H_