Add VectorIconButton functionality to ImageButton.

chrome/browser/ui/views/tabs/tab_strip.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/ui/views/tabs/tab_strip.h"
 
 #include <stddef.h>
 
 #include <algorithm>
 #include <iterator>
@@ skipping 251 matching lines @@
 
 ///////////////////////////////////////////////////////////////////////////////
 // NewTabButton
 //
 //  A subclass of button that hit-tests to the shape of the new tab button and
 //  does custom drawing.
 
 class NewTabButton : public views::ImageButton,
                      public views::MaskedTargeterDelegate {
  public:
-  NewTabButton(TabStrip* tab_strip, views::ButtonListener* listener);
+  NewTabButton(TabStrip* tab_strip, views::ImageButtonDelegate* listener);
   ~NewTabButton() override;
 
   // Set the background offset used to match the background image to the frame
   // image.
   void set_background_offset(const gfx::Point& offset) {
     background_offset_ = offset;
   }
 
  private:
   // views::ImageButton:
@@ skipping 28 matching lines @@
 
   // The offset used to paint the background image.
   gfx::Point background_offset_;
 
   // were we destroyed?
   bool* destroyed_;
 
   DISALLOW_COPY_AND_ASSIGN(NewTabButton);
 };
 
-NewTabButton::NewTabButton(TabStrip* tab_strip, views::ButtonListener* listener)
-    : views::ImageButton(listener),
-      tab_strip_(tab_strip),
-      destroyed_(NULL) {
+NewTabButton::NewTabButton(TabStrip* tab_strip,
+                           views::ImageButtonDelegate* listener)
+    : views::ImageButton(listener), tab_strip_(tab_strip), destroyed_(NULL) {
   set_animate_on_state_change(true);
 #if defined(OS_LINUX) && !defined(OS_CHROMEOS)
   set_triggerable_event_flags(triggerable_event_flags() |
                               ui::EF_MIDDLE_MOUSE_BUTTON);
 #endif
 }
 
 NewTabButton::~NewTabButton() {
   if (destroyed_)
     *destroyed_ = true;
@@ skipping 2446 matching lines @@
           ConvertPointToViewAndGetEventHandler(this, newtab_button_, point);
       if (view)
         return view;
     }
     Tab* tab = FindTabForEvent(point);
     if (tab)
       return ConvertPointToViewAndGetEventHandler(this, tab, point);
   }
   return this;
 }