Morph CapabilityFilter into caps::Capabilities, which supports capability classes (yet unimplemente…

mojo/shell/public/cpp/capabilities.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 MOJO_SHELL_PUBLIC_CPP_CAPABILITIES_H_
+#define MOJO_SHELL_PUBLIC_CPP_CAPABILITIES_H_
+
+#include <map>
+#include <set>
+#include <string>
+
+#include "mojo/shell/public/interfaces/shell_resolver.mojom.h"
+
+namespace mojo {
+using Class = std::string;
+using Classes = std::set<std::string>;
+using Interface = std::string;
+using Interfaces = std::set<std::string>;
+using Name = std::string;
+
+// See comments in mojo/shell/public/interfaces/capabilities.mojom for a
+// description of CapabilityRequest and CapabilitySpec.
+
+struct CapabilityRequest {
+  CapabilityRequest();
+  ~CapabilityRequest();
+  bool operator==(const CapabilityRequest& other) const;
+  Classes classes;
+  Interfaces interfaces;
+};
+
+struct CapabilitySpec {
+  CapabilitySpec();
+  ~CapabilitySpec();
+  bool operator==(const CapabilitySpec& other) const;
+  std::map<Class, Interfaces> provided;
+  std::map<Name, CapabilityRequest> required;
+};
+
+template <>
+struct TypeConverter<shell::mojom::CapabilitySpecPtr, CapabilitySpec> {
+  static shell::mojom::CapabilitySpecPtr Convert(
+      const CapabilitySpec& input);
+};
+template <>
+struct TypeConverter<CapabilitySpec, shell::mojom::CapabilitySpecPtr> {
+  static CapabilitySpec Convert(
+      const shell::mojom::CapabilitySpecPtr& input);
+};
+
+template <>
+struct TypeConverter<shell::mojom::CapabilityRequestPtr,
+                     CapabilityRequest> {
+  static shell::mojom::CapabilityRequestPtr Convert(
+      const CapabilityRequest& input);
+};
+template <>
+struct TypeConverter<CapabilityRequest,
+                     shell::mojom::CapabilityRequestPtr> {
+  static CapabilityRequest Convert(
+      const shell::mojom::CapabilityRequestPtr& input);
+};
+}  // namespace mojo
+
+#endif  // MOJO_SHELL_PUBLIC_CPP_CAPABILITIES_H_