Add VectorIconButton functionality to ImageButton.

ui/views/bubble/bubble_frame_view.h

Index: ui/views/bubble/bubble_frame_view.h
diff --git a/ui/views/bubble/bubble_frame_view.h b/ui/views/bubble/bubble_frame_view.h
index cd918a3841c3704b4e230fb1348e97c7daf8ffd9..482be2595c10038feb9f88d3da2d9ae3f11c3d66 100644
--- a/ui/views/bubble/bubble_frame_view.h
+++ b/ui/views/bubble/bubble_frame_view.h
@@ -9,7 +9,7 @@
 #include "base/gtest_prod_util.h"
 #include "base/macros.h"
 #include "ui/gfx/geometry/insets.h"
-#include "ui/views/controls/button/vector_icon_button_delegate.h"
+#include "ui/views/controls/button/image_button.h"
 #include "ui/views/window/non_client_view.h"
 
 namespace gfx {
@@ -25,7 +25,7 @@ class ImageView;
 
 // The non-client frame view of bubble-styled widgets.
 class VIEWS_EXPORT BubbleFrameView : public NonClientFrameView,
-                                     public VectorIconButtonDelegate {
+                                     public ImageButtonDelegate {
  public:
   // Internal class name.
   static const char kViewClassName[];
@@ -35,9 +35,9 @@ class VIEWS_EXPORT BubbleFrameView : public NonClientFrameView,
   ~BubbleFrameView() override;
 
   // Creates a close button used in the corner of the dialog.
-  static Button* CreateCloseButton(VectorIconButtonDelegate* delegate);
+  static Button* CreateCloseButton(ImageButtonDelegate* delegate);
 
-  // NonClientFrameView overrides:
+  // NonClientFrameView:
   gfx::Rect GetBoundsForClientView() const override;
   gfx::Rect GetWindowBoundsForClientBounds(
       const gfx::Rect& client_bounds) const override;
@@ -53,7 +53,7 @@ class VIEWS_EXPORT BubbleFrameView : public NonClientFrameView,
   // Caller must arrange to update the layout to have the call take effect.
   void SetTitleFontList(const gfx::FontList& font_list);
 
-  // View overrides:
+  // View:
   const char* GetClassName() const override;
   gfx::Insets GetInsets() const override;
   gfx::Size GetPreferredSize() const override;
@@ -65,7 +65,7 @@ class VIEWS_EXPORT BubbleFrameView : public NonClientFrameView,
   void OnThemeChanged() override;
   void OnNativeThemeChanged(const ui::NativeTheme* theme) override;
 
-  // Overridden from VectorIconButtonDelegate:
+  // ImageButtonDelegate:
   void ButtonPressed(Button* sender, const ui::Event& event) override;
 
   // Use bubble_border() and SetBubbleBorder(), not border() and SetBorder().