[Media Router] Auto-close Media Router dialog after starting or stopping a session.

chrome/test/media_router/media_router_integration_browsertest.h

Index: chrome/test/media_router/media_router_integration_browsertest.h
diff --git a/chrome/test/media_router/media_router_integration_browsertest.h b/chrome/test/media_router/media_router_integration_browsertest.h
index d8c4bef29af627a350cd330234ee6eb2e5b18e39..14e1dacbcaab6b49d983eeb97dc5701ae4ab3ddc 100644
--- a/chrome/test/media_router/media_router_integration_browsertest.h
+++ b/chrome/test/media_router/media_router_integration_browsertest.h
@@ -46,11 +46,18 @@ class MediaRouterIntegrationBrowserTest : public MediaRouterBaseBrowserTest {
   static std::string ExecuteScriptAndExtractString(
       const content::ToRenderFrameHost& adapter, const std::string& script);
 
+  void ClickRouteDetailsHeader();
+
   // Get the chrome modal dialog.
   // |web_contents|: The web contents of the test page which invokes the popup
   //                 dialog.
   content::WebContents* GetMRDialog(content::WebContents* web_contents);
 
+  // Checks that the chrome modal dialog does not exist.
+  bool IsDialogClosed(content::WebContents* web_contents);
+  void CheckDialogIsClosed(content::WebContents* web_contents);
+  void CheckDialogIsOpen(content::WebContents* web_contents);
+
   void OpenTestPage(base::FilePath::StringPieceType file);
   void OpenTestPageInNewTab(base::FilePath::StringPieceType file);