Implement chrome-side intent filtering.

components/arc/intent_helper/intent_filter.h

Index: components/arc/intent_helper/intent_filter.h
diff --git a/components/arc/intent_helper/intent_filter.h b/components/arc/intent_helper/intent_filter.h
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index 0000000000000000000000000000000000000000..71366571dc5489a921b443721fcbc477ea9b0a19
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+++ b/components/arc/intent_helper/intent_filter.h
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+// 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_INTENT_FILTER_H_
+#define COMPONENTS_ARC_INTENT_HELPER_INTENT_FILTER_H_
+
+#include <string>
+#include <vector>
+
+#include "components/arc/common/intent_helper.mojom.h"
+
+class GURL;
+
+namespace arc {
+
+// A chrome-side implementation of Android's IntentFilter class.  This is used
+// to approximate the intent filtering and determine whether a given URL is
+// likely to be handled by any android-side apps, prior to making expensive IPC
+// calls.
+class IntentFilter {
+ public:
+  explicit IntentFilter(const mojom::IntentFilterPtr& mojo_intent_filter);
+  IntentFilter(const IntentFilter& other);
+  ~IntentFilter();
+
+  bool match(const GURL& url) const;
+
+ private:
+  // A helper class for handling matching of the host part of the URL.
+  class AuthorityEntry {
+   public:
+    explicit AuthorityEntry(const mojom::AuthorityEntryPtr& entry);
+    bool match(const GURL& url) const;
+
+   private:
+    std::string host_;
+    bool wild_;
+    int port_;
+  };
+
+  // A helper class for handling matching of various patterns in the URL.
+  class PatternMatcher {
+   public:
+    explicit PatternMatcher(const mojom::PatternMatcherPtr& pattern);
+    bool match(const std::string& match) const;
+
+   private:
+    bool matchGlob(const std::string& match) const;
+
+    std::string pattern_;
+    mojom::PatternType match_type_;
+  };
+
+  bool matchDataAuthority(const GURL& url) const;
+  bool hasDataPath(const GURL& url) const;
+  bool hasDataSchemeSpecificPart(const GURL& url) const;
+
+  std::vector<AuthorityEntry> authorities_;
+  std::vector<PatternMatcher> paths_;
+  std::vector<PatternMatcher> scheme_specific_parts_;
+};
+
+}  // namespace arc
+
+#endif  // COMPONENTS_ARC_INTENT_HELPER_INTENT_FILTER_H_