Disable OpenLocalMediaFileCastFailNoFullscreen test on MSAN

TBR=reillyg@chromium.org

Bug: 879885
Change-Id: I9e301cca22f501bf0b0e25f6544a3cf53b35ea04
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2339349Reviewed-by: Fabio Tirelo <ftirelo@chromium.org>
Reviewed-by: Reilly Grant <reillyg@chromium.org>
Commit-Queue: Fabio Tirelo <ftirelo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#795616}

chrome/test/media_router/media_router_integration_browsertest.cc

@@ -510,7 +510,7 @@ IN_PROC_BROWSER_TEST_F(MediaRouterIntegrationBrowserTest,
 #endif
 // Tests that failed route creation of local file does not enter fullscreen.
 IN_PROC_BROWSER_TEST_F(MediaRouterIntegrationBrowserTest,
-                       OpenLocalMediaFileCastFailNoFullscreen) {
+                       MAYBE_OpenLocalMediaFileCastFailNoFullscreen) {
   // Start at a new tab, the file should open in the same tab.
   ui_test_utils::NavigateToURL(browser(), GURL(chrome::kChromeUINewTabURL));
   // Make sure there is 1 tab.