[Presentation API] (alternative) 1-UA: send message between controller and receiver page

chrome/browser/media/router/media_route.h

Index: chrome/browser/media/router/media_route.h
diff --git a/chrome/browser/media/router/media_route.h b/chrome/browser/media/router/media_route.h
index 2d36e244292abf1b8bedd8ee54dd81807e69ee1a..d1d60b6e2ad63ed935dabfa1659e954a75c26921 100644
--- a/chrome/browser/media/router/media_route.h
+++ b/chrome/browser/media/router/media_route.h
@@ -78,6 +78,14 @@ class MediaRoute {
 
   bool incognito() const { return incognito_; }
 
+  // Set to |true| if the presentation associated with this route is an
+  // offscreen presentation.
+  void set_is_offscreen_presentation(bool is_offscreen_presentation) {
+    is_offscreen_presentation_ = is_offscreen_presentation;
+  }
+
+  bool is_offscreen_presentation() const { return is_offscreen_presentation_; }
+
   bool Equals(const MediaRoute& other) const;
 
  private:
@@ -89,6 +97,7 @@ class MediaRoute {
   std::string custom_controller_path_;
   bool for_display_;
   bool incognito_;
+  bool is_offscreen_presentation_;
 };
 
 }  // namespace media_router