[Presentation API] 1-UA presentation support + presenter APIs.

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 b3056892f087b5138652036d1cc008acb0be66bd..c22d747fbd7055b3c7189ce6e26f7ffd1e44c64f 100644
--- a/chrome/browser/media/router/media_route.h
+++ b/chrome/browser/media/router/media_route.h
@@ -72,6 +72,11 @@ class MediaRoute {
 
   bool for_display() const { return for_display_; }
 
+  bool is_offscreen_presentation() const { return is_offscreen_presentation_; }
+  void set_is_offscreen_presentation(bool is_offscreen_presentation) {
+    is_offscreen_presentation = is_offscreen_presentation_;
+  }
+
   bool Equals(const MediaRoute& other) const;
 
  private:
@@ -82,6 +87,7 @@ class MediaRoute {
   bool is_local_;
   std::string custom_controller_path_;
   bool for_display_;
+  bool is_offscreen_presentation_;
 };
 
 }  // namespace media_router