Disable BrowserPluginHostTest.GuestUnresponsive on win and linux due to flakiness

content/browser/browser_plugin/browser_plugin_host_browsertest.cc

Index: content/browser/browser_plugin/browser_plugin_host_browsertest.cc
diff --git a/content/browser/browser_plugin/browser_plugin_host_browsertest.cc b/content/browser/browser_plugin/browser_plugin_host_browsertest.cc
index 9afcaca12af1ecf10e979a211c91df46bebe3e72..7518a5c8f7e20cc25c228b64a80be8f28920bdfc 100644
--- a/content/browser/browser_plugin/browser_plugin_host_browsertest.cc
+++ b/content/browser/browser_plugin/browser_plugin_host_browsertest.cc
@@ -343,7 +343,15 @@ class BrowserPluginHostTest : public ContentBrowserTest {
 
 // This test loads a guest that has a busy loop, and therefore it hangs the
 // guest.
-IN_PROC_BROWSER_TEST_F(BrowserPluginHostTest, GuestUnresponsive) {
+//
+// Disabled on Windows and Linux since it is flaky. crbug.com/164812
+#if defined(OS_WIN) || defined(OS_LINUX)
+#define MAYBE_GuestUnresponsive DISABLED_GuestUnresponsive
+#else
+#define MAYBE_GuestUnresponsive GuestUnresponsive
+#endif
+IN_PROC_BROWSER_TEST_F(BrowserPluginHostTest,
+                       MAYBE_GuestUnresponsive) {
   // Override the hang timeout for guest to be very small.
   content::BrowserPluginGuest::set_factory_for_testing(
       TestShortHangTimeoutGuestFactory::GetInstance());