Disabled UnloadTest.CrossSiteInfiniteBeforeUnloadSync because it flakes too often.

chrome/browser/unload_browsertest.cc

Index: chrome/browser/unload_browsertest.cc
diff --git a/chrome/browser/unload_browsertest.cc b/chrome/browser/unload_browsertest.cc
index ee14f53ca9ee430669673c31d39e110fbc851886..bfc6547770960f0b631b02561f17a38e87e1908f 100644
--- a/chrome/browser/unload_browsertest.cc
+++ b/chrome/browser/unload_browsertest.cc
@@ -230,7 +230,7 @@ IN_PROC_BROWSER_TEST_F(UnloadTest, CrossSiteInfiniteBeforeUnloadAsync) {
 // Then two two sync crosssite requests to ensure
 // we correctly nav to each one.
 // If this flakes, reopen bug http://crbug.com/86469.
-IN_PROC_BROWSER_TEST_F(UnloadTest, CrossSiteInfiniteBeforeUnloadSync) {
+IN_PROC_BROWSER_TEST_F(UnloadTest, DISABLED_CrossSiteInfiniteBeforeUnloadSync) {
   // Tests makes no sense in single-process mode since the renderer is hung.
   if (CommandLine::ForCurrentProcess()->HasSwitch(switches::kSingleProcess))
     return;