Revert vector icon CLs.

ui/views/controls/throbber.h

Index: ui/views/controls/throbber.h
diff --git a/ui/views/controls/throbber.h b/ui/views/controls/throbber.h
index 43288158b8c8bbe611a04eadd4af792ee4801f90..c5bed816a584b40fdf0dcea4c9324589c3faf963 100644
--- a/ui/views/controls/throbber.h
+++ b/ui/views/controls/throbber.h
@@ -11,6 +11,10 @@
 #include "base/timer/timer.h"
 #include "ui/views/view.h"
 
+namespace gfx {
+class ImageSkia;
+}
+
 namespace views {
 
 // Throbbers display an animation, usually used as a status indicator.
@@ -42,6 +46,9 @@ class VIEWS_EXPORT Throbber : public View {
   // Whether or not we should display a checkmark.
   bool checked_;
 
+  // The checkmark image. Will be null until it's used (if ever).
+  const gfx::ImageSkia* checkmark_;
+
   DISALLOW_COPY_AND_ASSIGN(Throbber);
 };