Revert 151485 - Adding unit tests for maximize menu

ash/wm/custom_frame_view_ash.h

Index: ash/wm/custom_frame_view_ash.h
===================================================================
--- ash/wm/custom_frame_view_ash.h	(revision 151488)
+++ ash/wm/custom_frame_view_ash.h	(working copy)
@@ -12,7 +12,6 @@
 
 namespace ash {
 class FramePainter;
-class FrameMaximizeButton;
 }
 namespace gfx {
 class Font;
@@ -41,7 +40,7 @@
      explicit TestApi(CustomFrameViewAsh* frame) : frame_(frame) {
      }
 
-     ash::FrameMaximizeButton* maximize_button() const {
+     views::ImageButton* maximize_button() const {
        return frame_->maximize_button_;
      }
 
@@ -82,7 +81,7 @@
   // Not owned.
   views::Widget* frame_;
 
-  ash::FrameMaximizeButton* maximize_button_;
+  views::ImageButton* maximize_button_;
   views::ImageButton* close_button_;
   views::ImageButton* window_icon_;