[ios] Prevent multiple page security popups in voice over mode.

ios/chrome/browser/ui/browser_view_controller.mm

Index: ios/chrome/browser/ui/browser_view_controller.mm
diff --git a/ios/chrome/browser/ui/browser_view_controller.mm b/ios/chrome/browser/ui/browser_view_controller.mm
index f6623048705ccd76ded971a33c1cfbb103683fdb..69a19946c021b0e7b56c63efba094c34d0791b9e 100644
--- a/ios/chrome/browser/ui/browser_view_controller.mm
+++ b/ios/chrome/browser/ui/browser_view_controller.mm
@@ -3417,6 +3417,11 @@ class BrowserBookmarkModelBridge : public bookmarks::BookmarkModelObserver {
   if ([self isTabNativePage:tab])
     return;
 
+  // Don't show the bubble twice (this can happen when tapping very quickly in
+  // accessibility mode

[rohitrao (ping after 24h), 2017/02/06 14:02:13]

Missing close paren.

Why is this only triggered by voiceover?  What is different when you tap quickly
without voiceover?

[justincohen, 2017/02/06 15:49:54]

Done.

+  if (_pageInfoController)
+    return;
+
   base::RecordAction(UserMetricsAction("MobileToolbarPageSecurityInfo"));
 
   // Dismiss the omnibox (if open).