For some vector icons, get the size from the vector definition.

ui/views/controls/menu/menu_image_util.cc

Index: ui/views/controls/menu/menu_image_util.cc
diff --git a/ui/views/controls/menu/menu_image_util.cc b/ui/views/controls/menu/menu_image_util.cc
index 55f6e551c2f485bdd38f6ed63fc01196f21726c7..7f342ac6dc11ca2719c219f1e9187066329207ef 100644
--- a/ui/views/controls/menu/menu_image_util.cc
+++ b/ui/views/controls/menu/menu_image_util.cc
@@ -12,8 +12,7 @@
 namespace views {
 
 gfx::ImageSkia GetMenuCheckImage(SkColor icon_color) {
-  return gfx::CreateVectorIcon(gfx::VectorIconId::MENU_CHECK, kMenuCheckSize,

[Evan Stade, 2016/04/26 16:58:29]

In some places we aren't actually getting rid of a constant because it's still
needed elsewhere. In these cases, we still have the constant expressed multiple
times, and the only difference is that if the constants diverge, the error
behavior will be "icon is wrong size" instead of "icon is scaled imperfectly".

-                               icon_color);
+  return gfx::CreateVectorIcon(gfx::VectorIconId::MENU_CHECK, icon_color);
 }
 
 gfx::ImageSkia GetRadioButtonImage(bool toggled,
@@ -27,8 +26,7 @@ gfx::ImageSkia GetRadioButtonImage(bool toggled,
 }
 
 gfx::ImageSkia GetSubmenuArrowImage(SkColor icon_color) {
-  return gfx::CreateVectorIcon(gfx::VectorIconId::SUBMENU_ARROW,
-                               kSubmenuArrowSize, icon_color);
+  return gfx::CreateVectorIcon(gfx::VectorIconId::SUBMENU_ARROW, icon_color);
 }
 
 }  // namespace views