Add VectorIconButton functionality to ImageButton.

chrome/browser/ui/views/apps/app_info_dialog/app_info_permissions_panel.cc

Index: chrome/browser/ui/views/apps/app_info_dialog/app_info_permissions_panel.cc
diff --git a/chrome/browser/ui/views/apps/app_info_dialog/app_info_permissions_panel.cc b/chrome/browser/ui/views/apps/app_info_dialog/app_info_permissions_panel.cc
index 6dbc4988a61e3b8117f67afd476f079c12ac9219..d0d111b7649535f95bcea03665e3d77e2abda871 100644
--- a/chrome/browser/ui/views/apps/app_info_dialog/app_info_permissions_panel.cc
+++ b/chrome/browser/ui/views/apps/app_info_dialog/app_info_permissions_panel.cc
@@ -45,7 +45,8 @@ const int kIndentationBeforeNestedBullet = 13;
 // Creates a close button that calls |callback| on click and can be placed to
 // the right of a bullet in the permissions list. The alt-text is set to a
 // revoke message containing the given |permission_message|.
-class RevokeButton : public views::ImageButton, public views::ButtonListener {
+class RevokeButton : public views::ImageButton,
+                     public views::ImageButtonDelegate {
  public:
   explicit RevokeButton(const base::Closure& callback,
                         base::string16 permission_message)
@@ -70,7 +71,7 @@ class RevokeButton : public views::ImageButton, public views::ButtonListener {
   ~RevokeButton() override {}
 
  private:
-  // Overridden from views::ButtonListener.
+  // views::ImageButtonDelegate:
   void ButtonPressed(views::Button* sender, const ui::Event& event) override {
     DCHECK_EQ(this, sender);
     if (!callback_.is_null())