[Media Router] Remove GetRouteIds() from PresentationServiceDelegateImpl.

chrome/browser/media/router/presentation_service_delegate_impl.cc

Index: chrome/browser/media/router/presentation_service_delegate_impl.cc
diff --git a/chrome/browser/media/router/presentation_service_delegate_impl.cc b/chrome/browser/media/router/presentation_service_delegate_impl.cc
index e938d757883b27bf872c800695bdb5cb58167398..ea2dc3ab93046a411d66b7f3566e017628a9b0e2 100644
--- a/chrome/browser/media/router/presentation_service_delegate_impl.cc
+++ b/chrome/browser/media/router/presentation_service_delegate_impl.cc
@@ -157,7 +157,6 @@ class PresentationFrame {
                         const MediaRoute::Id& route_id);
 
   const MediaRoute::Id GetRouteId(const std::string& presentation_id) const;
-  const std::vector<MediaRoute::Id> GetRouteIds() const;
 
   void OnPresentationSessionStarted(
       const content::PresentationSessionInfo& session,
@@ -215,13 +214,6 @@ const MediaRoute::Id PresentationFrame::GetRouteId(
   return it != presentation_id_to_route_id_.end() ? it->second : "";
 }
 
-const std::vector<MediaRoute::Id> PresentationFrame::GetRouteIds() const {
-  std::vector<MediaRoute::Id> route_ids;
-  for (const auto& e : presentation_id_to_route_id_)
-    route_ids.push_back(e.second);
-  return route_ids;
-}
-
 bool PresentationFrame::SetScreenAvailabilityListener(
     content::PresentationScreenAvailabilityListener* listener) {
   MediaSource source(GetMediaSourceFromListener(listener));
@@ -398,8 +390,6 @@ class PresentationFrameManager {
 
   const MediaRoute::Id GetRouteId(const RenderFrameHostId& render_frame_host_id,
                                   const std::string& presentation_id) const;
-  const std::vector<MediaRoute::Id> GetRouteIds(
-      const RenderFrameHostId& render_frame_host_id) const;
 
   const PresentationRequest* default_presentation_request() const {
     return default_presentation_request_.get();
@@ -483,13 +473,6 @@ const MediaRoute::Id PresentationFrameManager::GetRouteId(
       ? it->second->GetRouteId(presentation_id) : MediaRoute::Id();
 }
 
-const std::vector<MediaRoute::Id> PresentationFrameManager::GetRouteIds(
-    const RenderFrameHostId& render_frame_host_id) const {
-  const auto it = presentation_frames_.find(render_frame_host_id);
-  return it != presentation_frames_.end() ? it->second->GetRouteIds()
-                                          : std::vector<MediaRoute::Id>();
-}
-
 bool PresentationFrameManager::SetScreenAvailabilityListener(
     const RenderFrameHostId& render_frame_host_id,
     content::PresentationScreenAvailabilityListener* listener) {