Add initial tests for keyboard access (tabbing in some dialogs)....

views/views_delegate.h

Index: views/views_delegate.h
===================================================================
--- views/views_delegate.h	(revision 53979)
+++ views/views_delegate.h	(working copy)
@@ -11,6 +11,8 @@
 #include <windows.h>
 #endif
 
+#include "views/accessibility/accessibility_types.h"
+
 class Clipboard;
 
 namespace gfx {
@@ -19,6 +21,8 @@
 
 namespace views {
 
+class View;
+
 // ViewsDelegate is an interface implemented by an object using the views
 // framework. It is used to obtain various high level application utilities
 // and perform some actions such as window placement saving.
@@ -48,6 +52,11 @@
   virtual bool GetSavedMaximizedState(const std::wstring& window_name,
                                       bool* maximized) const = 0;
 
+  // Notify the delegate that an accessibility event has happened in
+  // a particular view.
+  virtual void NotifyAccessibilityEvent(
+      views::View* view, AccessibilityTypes::Event event_type) = 0;
+
 #if defined(OS_WIN)
   // Retrieves the default window icon to use for windows if none is specified.
   virtual HICON GetDefaultWindowIcon() const = 0;