Remove VectorIconId references from the codebase

ui/gfx/vector_icon_types.h

Index: ui/gfx/vector_icon_types.h
diff --git a/ui/gfx/vector_icon_types.h b/ui/gfx/vector_icon_types.h
index 36eb18eb7b884337866dcbe8041fa7a065b8b06d..facc054f7eb78d60810a5a2f24620c59374b3ea4 100644
--- a/ui/gfx/vector_icon_types.h
+++ b/ui/gfx/vector_icon_types.h
@@ -13,8 +13,6 @@
 
 namespace gfx {
 
-enum class VectorIconId;
-
 // The size of a single side of the square canvas to which path coordinates
 // are relative, in device independent pixels.
 const int kReferenceSizeDip = 48;
@@ -87,13 +85,6 @@ struct VectorIcon {
   const gfx::PathElement* path_1x;
 };
 
-// Returns an array of path commands and arguments, terminated by END.
-const PathElement* GetPathForVectorIcon(VectorIconId id);
-// As above, but returns an icon specifically adjusted for 1x scale factors.
-// This draws from icon files that end with .1x.icon. If no such file exists,
-// it will fall back to GetPathForVectorIcon.
-const PathElement* GetPathForVectorIconAt1xScale(VectorIconId id);
-
 }  // namespace gfx
 
 #endif  // UI_GFX_VECTOR_ICON_TYPES_H_