Revert of Suppress accessibility events when user is navigating away.

content/browser/accessibility/browser_accessibility_manager.h

Index: content/browser/accessibility/browser_accessibility_manager.h
diff --git a/content/browser/accessibility/browser_accessibility_manager.h b/content/browser/accessibility/browser_accessibility_manager.h
index f60bd025eb27125108508712a85204224f5b91b6..e59a1ed86e5c203a60061e1e31192ed70dea9982 100644
--- a/content/browser/accessibility/browser_accessibility_manager.h
+++ b/content/browser/accessibility/browser_accessibility_manager.h
@@ -146,12 +146,6 @@
   // view lost focus.
   virtual void OnWindowBlurred();
 
-  // Notify the accessibility manager about page navigation.
-  void UserIsNavigatingAway();
-  virtual void UserIsReloading();
-  void NavigationSucceeded();
-  void NavigationFailed();
-
   // Called to notify the accessibility manager that a mouse down event
   // occurred in the tab.
   void GotMouseDown();
@@ -310,9 +304,6 @@
   // A mapping from a node id to its wrapper of type BrowserAccessibility.
   base::hash_map<int32, BrowserAccessibility*> id_wrapper_map_;
 
-  // True if the user has initiated a navigation to another page.
-  bool user_is_navigating_away_;
-
   // The on-screen keyboard state.
   OnScreenKeyboardState osk_state_;