[Presentation API, MediaRouter] Routing from media sink selection to route creation.

chrome/browser/media/router/media_router_dialog_controller.h

Index: chrome/browser/media/router/media_router_dialog_controller.h
diff --git a/chrome/browser/media/router/media_router_dialog_controller.h b/chrome/browser/media/router/media_router_dialog_controller.h
index 86e3620a5bc970d644939d8ce675d792e2847af8..d879bbdad8ae1f587329a4aa383a1aa5e27309ed 100644
--- a/chrome/browser/media/router/media_router_dialog_controller.h
+++ b/chrome/browser/media/router/media_router_dialog_controller.h
@@ -5,6 +5,8 @@
 #ifndef CHROME_BROWSER_MEDIA_ROUTER_MEDIA_ROUTER_DIALOG_CONTROLLER_H_
 #define CHROME_BROWSER_MEDIA_ROUTER_MEDIA_ROUTER_DIALOG_CONTROLLER_H_
 
+#include <string>
+
 #include "base/macros.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/threading/thread_checker.h"
@@ -60,6 +62,8 @@ class MediaRouterDialogController {
 
   content::WebContents* initiator() const { return initiator_; }
 
+  std::string GetMediaSourceId() const;
+
   // Resets the state of the controller. Must be called from the overrides.
   virtual void Reset();
   // Creates a new media router dialog modal to |initiator_|.