[Media Router] Wiring for searching route providers for new sinks.

chrome/browser/media/router/media_router_mojo_impl.h

Index: chrome/browser/media/router/media_router_mojo_impl.h
diff --git a/chrome/browser/media/router/media_router_mojo_impl.h b/chrome/browser/media/router/media_router_mojo_impl.h
index bfe616a1a4e3e405755284d432c28f98cbdcab4f..54b684b70e763e7f9dd073410a795e197177dd3d 100644
--- a/chrome/browser/media/router/media_router_mojo_impl.h
+++ b/chrome/browser/media/router/media_router_mojo_impl.h
@@ -160,6 +160,20 @@ class MediaRouterMojoImpl : public MediaRouterBase,
     DISALLOW_COPY_AND_ASSIGN(MediaSinksQuery);
   };
 
+  // Represents a query to the MRPM for media sinks with a certain sink ID and
+  // holds observers for the query. This struct owns the observers because after
+  // they are notified they need to be destroyed.
+  struct MediaSinksSearchQuery {
+   public:
+    MediaSinksSearchQuery();
+    ~MediaSinksSearchQuery();
+
+    std::vector<scoped_ptr<MediaSinksSearchRequest>> observers;
+
+   private:
+    DISALLOW_COPY_AND_ASSIGN(MediaSinksSearchQuery);
+  };
+
   struct MediaRoutesQuery {
    public:
     MediaRoutesQuery();
@@ -202,6 +216,8 @@ class MediaRouterMojoImpl : public MediaRouterBase,
   // MediaRouter implementation.
   bool RegisterMediaSinksObserver(MediaSinksObserver* observer) override;
   void UnregisterMediaSinksObserver(MediaSinksObserver* observer) override;
+  bool RegisterMediaSinksSearchRequest(
+      scoped_ptr<MediaSinksSearchRequest> request) override;
   void RegisterMediaRoutesObserver(MediaRoutesObserver* observer) override;
   void UnregisterMediaRoutesObserver(MediaRoutesObserver* observer) override;
   void RegisterIssuesObserver(IssuesObserver* observer) override;
@@ -247,6 +263,8 @@ class MediaRouterMojoImpl : public MediaRouterBase,
   void DoStopObservingMediaSinks(const MediaSource::Id& source_id);
   void DoStartObservingMediaRoutes(const MediaSource::Id& source_id);
   void DoStopObservingMediaRoutes(const MediaSource::Id& source_id);
+  void DoSearchProviders(const MediaSource::Id& source_id,
+                         const MediaSink::Id& sink_id);
 
   // Invoked when the next batch of messages arrives.
   // |route_id|: ID of route of the messages.
@@ -268,9 +286,12 @@ class MediaRouterMojoImpl : public MediaRouterBase,
   void OnIssue(interfaces::IssuePtr issue) override;
   void OnSinksReceived(const mojo::String& media_source,
                        mojo::Array<interfaces::MediaSinkPtr> sinks) override;
+  void OnSearchSinksReceived(
+      const mojo::String& sink_id,
+      mojo::Array<interfaces::MediaSinkPtr> sinks) override;
   void OnRoutesUpdated(mojo::Array<interfaces::MediaRoutePtr> routes,
-      const mojo::String& media_source,
-      mojo::Array<mojo::String> joinable_route_ids) override;
+       const mojo::String& media_source,
+       mojo::Array<mojo::String> joinable_route_ids) override;
   void OnSinkAvailabilityUpdated(
       interfaces::MediaRouter::SinkAvailability availability) override;
   void OnPresentationConnectionStateChanged(
@@ -321,6 +342,9 @@ class MediaRouterMojoImpl : public MediaRouterBase,
   base::ScopedPtrHashMap<MediaSource::Id, scoped_ptr<MediaSinksQuery>>
       sinks_queries_;
 
+  std::unordered_map<MediaSink::Id, scoped_ptr<MediaSinksSearchQuery>>
+      search_queries_;
+
   base::ScopedPtrHashMap<MediaSource::Id, scoped_ptr<MediaRoutesQuery>>
       routes_queries_;