media::mojom::Remoter and CastRemotingConnector/Sender

chrome/browser/media/router/media_source_helper.h

Index: chrome/browser/media/router/media_source_helper.h
diff --git a/chrome/browser/media/router/media_source_helper.h b/chrome/browser/media/router/media_source_helper.h
index 0e2822a99025ea979ed7e9520a0385cce6e02f8e..7e03d6985b1de255081c898c51b6a60a9f3f6f68 100644
--- a/chrome/browser/media/router/media_source_helper.h
+++ b/chrome/browser/media/router/media_source_helper.h
@@ -9,6 +9,10 @@
 
 #include "chrome/browser/media/router/media_source.h"
 
+namespace content {
+class WebContents;
+}
+
 namespace media_router {
 
 // Helper library for protocol-specific media source object creation.
@@ -27,6 +31,10 @@ bool IsMirroringMediaSource(const MediaSource& source);
 // Does not deeper protocol-level syntax checks.
 bool IsValidMediaSource(const MediaSource& source);
 
+// Looks up the content::WebContents instance for |source|. If |source| is
+// invalid, nullptr is returned.
+content::WebContents* WebContentsFromMediaSource(const MediaSource& source);
+
 // Extracts the presentation URL from |source|.
 // If |source| is invalid, an empty string is returned.
 std::string PresentationUrlFromMediaSource(const MediaSource& source);