Call GetBrowser() from RenderViewContextMenu::IsRouteMediaEnabled()

chrome/browser/renderer_context_menu/render_view_context_menu.cc

Index: chrome/browser/renderer_context_menu/render_view_context_menu.cc
diff --git a/chrome/browser/renderer_context_menu/render_view_context_menu.cc b/chrome/browser/renderer_context_menu/render_view_context_menu.cc
index 82ed3656f5b33dad2339b6b213938ff2decbc36d..1a915f6dea78f22adbdcf01ab8269a65681766e5 100644
--- a/chrome/browser/renderer_context_menu/render_view_context_menu.cc
+++ b/chrome/browser/renderer_context_menu/render_view_context_menu.cc
@@ -2098,7 +2098,7 @@ bool RenderViewContextMenu::IsRouteMediaEnabled() const {
   if (!media_router::MediaRouterEnabled(browser_context_))
     return false;
 
-  Browser* browser = chrome::FindBrowserWithWebContents(source_web_contents_);
+  Browser* browser = GetBrowser();
   if (!browser)
     return false;
 
@@ -2377,13 +2377,9 @@ void RenderViewContextMenu::ExecRouteMedia() {
   if (!media_router::MediaRouterEnabled(browser_context_))
     return;
 
-  Browser* browser =
-      chrome::FindBrowserWithWebContents(source_web_contents_);
-  DCHECK(browser);
-
   media_router::MediaRouterDialogController* dialog_controller =
       media_router::MediaRouterDialogController::GetOrCreateForWebContents(
-          source_web_contents_);
+          embedder_web_contents_);
   if (!dialog_controller)
     return;