Re-enable FocusBeforeNavigation test.

content/browser/browser_plugin/browser_plugin_guest.cc

Index: content/browser/browser_plugin/browser_plugin_guest.cc
diff --git a/content/browser/browser_plugin/browser_plugin_guest.cc b/content/browser/browser_plugin/browser_plugin_guest.cc
index e6baddc7d35f1ff5d1b0efcf65ba65ddca6405d2..2756e3eb0435493e25424685172ba3d38245efdd 100644
--- a/content/browser/browser_plugin/browser_plugin_guest.cc
+++ b/content/browser/browser_plugin/browser_plugin_guest.cc
@@ -658,6 +658,9 @@ void BrowserPluginGuest::DidFinishNavigation(
 }
 
 void BrowserPluginGuest::RenderViewReady() {
+  if (GuestMode::IsCrossProcessFrameGuest(GetWebContents()))
+    return;
+
   RenderViewHost* rvh = GetWebContents()->GetRenderViewHost();
   // TODO(fsamuel): Investigate whether it's possible to update state earlier
   // here (see http://crbug.com/158151).