Make VKEY_F14 and VKEY_HELP close keyboard overlay.

ash/keyboard_overlay/keyboard_overlay_view.h

Index: ash/keyboard_overlay/keyboard_overlay_view.h
diff --git a/ash/keyboard_overlay/keyboard_overlay_view.h b/ash/keyboard_overlay/keyboard_overlay_view.h
index d83cb13309078818c6dfc7269b70db42f8a07f30..3e352ae31693ee31d78a4c344d700910573f0607 100644
--- a/ash/keyboard_overlay/keyboard_overlay_view.h
+++ b/ash/keyboard_overlay/keyboard_overlay_view.h
@@ -5,9 +5,12 @@
 #ifndef ASH_KEYBOARD_OVERLAY_KEYBOARD_OVERLAY_VIEW_H_
 #define ASH_KEYBOARD_OVERLAY_KEYBOARD_OVERLAY_VIEW_H_
 
+#include <vector>
+
 #include "ash/ash_export.h"
 #include "ash/wm/overlay_event_filter.h"
 #include "base/compiler_specific.h"
+#include "base/gtest_prod_util.h"
 #include "ui/views/controls/webview/web_dialog_view.h"
 
 class GURL;
@@ -27,6 +30,11 @@ class ASH_EXPORT KeyboardOverlayView
     : public views::WebDialogView,
       public ash::internal::OverlayEventFilter::Delegate {
  public:
+  struct KeyEventData {
+    ui::KeyboardCode key_code;
+    int flags;
+  };
+
   KeyboardOverlayView(content::BrowserContext* context,
                       ui::WebDialogDelegate* delegate,
                       WebContentsHandler* handler);
@@ -43,9 +51,15 @@ class ASH_EXPORT KeyboardOverlayView
                          const GURL& url);
 
  private:
+  FRIEND_TEST_ALL_PREFIXES(KeyboardOverlayViewTest, OpenAcceleratorsClose);
+  FRIEND_TEST_ALL_PREFIXES(KeyboardOverlayViewTest, NoRedundantCancelingKeys);
+
   // Overridden from views::WidgetDelegate:
   virtual void WindowClosing() OVERRIDE;
 
+  static void GetCancelingKeysForTesting(
+      std::vector<KeyEventData>* canceling_keys);
+
   DISALLOW_COPY_AND_ASSIGN(KeyboardOverlayView);
 };