Remove a bunch of pre-MD toolbar code and assets.

ui/views/controls/button/label_button.h

Index: ui/views/controls/button/label_button.h
diff --git a/ui/views/controls/button/label_button.h b/ui/views/controls/button/label_button.h
index 8f23162c87d93b4245f38274ac0807da0d297efe..96fc7af6b1f412de203a5070defdb1d600f777ce 100644
--- a/ui/views/controls/button/label_button.h
+++ b/ui/views/controls/button/label_button.h
@@ -31,9 +31,6 @@ class VIEWS_EXPORT LabelButton : public CustomButton,
   // The length of the hover fade animation.
   static const int kHoverAnimationDurationMs;
 
-  // Amount to inset each edge of the button when drawing the focus rectangle.
-  static const int kFocusRectInset;
-
   static const char kViewClassName[];
 
   LabelButton(ButtonListener* listener, const base::string16& text);