Browser Plugin: Enable VisibilityPreservation test

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 1eef97bc34971ee3cd4a06b38f0973b39224e594..79b41b068d3b03f4e248a229e870fcfdb7da80b7 100644
--- a/content/browser/browser_plugin/browser_plugin_host_browsertest.cc
+++ b/content/browser/browser_plugin/browser_plugin_host_browsertest.cc
@@ -1056,10 +1056,7 @@ IN_PROC_BROWSER_TEST_F(BrowserPluginHostTest, HiddenBeforeNavigation) {
 
 // This test verifies that if we lose the guest, and get a new one,
 // the new guest will inherit the visibility state of the old guest.
-//
-// Very flaky on Linux, Linux CrOS, somewhat flaky on XP, slightly on
-// Mac; http://crbug.com/162809.
-IN_PROC_BROWSER_TEST_F(BrowserPluginHostTest, DISABLED_VisibilityPreservation) {
+IN_PROC_BROWSER_TEST_F(BrowserPluginHostTest, VisibilityPreservation) {
   const char* kEmbedderURL = "files/browser_plugin_embedder.html";
   StartBrowserPluginTest(kEmbedderURL, kHTMLForGuest, true, "");
   RenderViewHostImpl* rvh = static_cast<RenderViewHostImpl*>(