Create utility function for configuring an ImageButton to use a vector

chrome/browser/ui/views/find_bar_view.h

Index: chrome/browser/ui/views/find_bar_view.h
diff --git a/chrome/browser/ui/views/find_bar_view.h b/chrome/browser/ui/views/find_bar_view.h
index 212f47416903c2fa9900e457e0c673fd03edf1b9..4ee0fdfd72d84883db5cba4c181507df57e007e9 100644
--- a/chrome/browser/ui/views/find_bar_view.h
+++ b/chrome/browser/ui/views/find_bar_view.h
@@ -11,7 +11,7 @@
 #include "base/macros.h"
 #include "base/strings/string16.h"
 #include "chrome/browser/ui/views/dropdown_bar_host_delegate.h"
-#include "ui/views/controls/button/vector_icon_button_delegate.h"
+#include "ui/views/controls/button/button.h"
 #include "ui/views/controls/textfield/textfield_controller.h"
 #include "ui/views/view.h"
 #include "ui/views/view_targeter_delegate.h"
@@ -24,11 +24,11 @@ class Range;
 }
 
 namespace views {
+class ImageButton;
 class Label;
 class Painter;
 class Separator;
 class Textfield;
-class VectorIconButton;
 }
 
 ////////////////////////////////////////////////////////////////////////////////
@@ -40,7 +40,7 @@ class VectorIconButton;
 ////////////////////////////////////////////////////////////////////////////////
 class FindBarView : public views::View,
                     public DropdownBarHostDelegate,
-                    public views::VectorIconButtonDelegate,
+                    public views::ButtonListener,
                     public views::TextfieldController,
                     public views::ViewTargeterDelegate {
  public:
@@ -74,9 +74,8 @@ class FindBarView : public views::View,
   // DropdownBarHostDelegate:
   void SetFocusAndSelection(bool select_all) override;
 
-  // views::VectorIconButtonDelegate:
+  // views::ButtonListener:
   void ButtonPressed(views::Button* sender, const ui::Event& event) override;
-  SkColor GetVectorIconBaseColor() const override;
 
   // views::TextfieldController:
   bool HandleKeyEvent(views::Textfield* sender,
@@ -115,9 +114,9 @@ class FindBarView : public views::View,
   views::Label* match_count_text_;
   views::View* focus_forwarder_view_;
   views::Separator* separator_;
-  views::VectorIconButton* find_previous_button_;
-  views::VectorIconButton* find_next_button_;
-  views::VectorIconButton* close_button_;
+  views::ImageButton* find_previous_button_;
+  views::ImageButton* find_next_button_;
+  views::ImageButton* close_button_;
 
   // The preferred height of the find bar.
   int preferred_height_;