Generated header files apparently require hard_dependency

ui/views/controls/image_view.h

Index: ui/views/controls/image_view.h
diff --git a/ui/views/controls/image_view.h b/ui/views/controls/image_view.h
index 28a8f0749331848d2b31a688479fda83b76f1406..24e76f2d1978ddc00f137131825a908355064b3c 100644
--- a/ui/views/controls/image_view.h
+++ b/ui/views/controls/image_view.h
@@ -7,11 +7,11 @@
 
 #include "third_party/skia/include/core/SkColor.h"
 #include "ui/gfx/image/image_skia.h"
-#include "ui/gfx/vector_icons_public.h"
 #include "ui/views/view.h"
 
 namespace gfx {
 class Canvas;
+enum class VectorIconId;
 }
 
 namespace views {
@@ -122,7 +122,7 @@ class VIEWS_EXPORT ImageView : public View {
   // The ID of the vector icon that should be drawn, or gfx::VECTOR_ICON_NONE.
   // This is drawn in addition to |image_|, but in most cases you probably want
   // one or the other and not both.
-  gfx::VectorIconId vector_id_;
+  int vector_id_;

[Nico, 2015/07/13 22:06:12]

you can probably keep this a gfx::VectorIconId. Since the compiler knows that
it's an int (due to it being an enum class) it can allocate storage for it even
without having the definition of VectorIconId. (At least it works with clang
locally)

[Evan Stade, 2015/07/13 23:20:43]

hmm, when I tried this before I got

 error: field has incomplete type 'gfx::VectorIconId'

but I can't seem to figure out which compiler said that and maybe I had some
other error that caused it.

 
   // The color to use when drawing the vector icon.
   SkColor vector_color_;