Initial chrome.mdns API.

extensions/common/event_matcher.h

Index: extensions/common/event_matcher.h
diff --git a/extensions/common/event_matcher.h b/extensions/common/event_matcher.h
index 7843fced0c3ffe59869c09d244d487c51795e2ee..bd0ce7bb628886ace2882d0107d9d77bd39e7471 100644
--- a/extensions/common/event_matcher.h
+++ b/extensions/common/event_matcher.h
@@ -12,6 +12,8 @@ namespace extensions {
 
 class EventFilteringInfo;
 
+extern const char kEventFilterServiceTypeKey[];
+
 // Matches EventFilteringInfos against a set of criteria. This is intended to
 // be used by EventFilter which performs efficient URL matching across
 // potentially many EventMatchers itself. This is why this class only exposes
@@ -29,6 +31,8 @@ class EventMatcher {
   int GetURLFilterCount() const;
   bool GetURLFilter(int i, base::DictionaryValue** url_filter_out);
 
+  std::string GetServiceTypeFilter() const;
+
   int HasURLFilters() const;
 
   int GetInstanceID() const;