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

chrome/browser/ui/views/infobars/infobar_view.cc

Index: chrome/browser/ui/views/infobars/infobar_view.cc
diff --git a/chrome/browser/ui/views/infobars/infobar_view.cc b/chrome/browser/ui/views/infobars/infobar_view.cc
index 802c44271f81e39cb4f15d42142479ebd03036e0..7f0a4b95eafb3033a7d4cfaf1c74bef7c603b41e 100644
--- a/chrome/browser/ui/views/infobars/infobar_view.cc
+++ b/chrome/browser/ui/views/infobars/infobar_view.cc
@@ -225,8 +225,8 @@ void InfoBarView::ViewHierarchyChanged(
     close_button_ = new views::ImageButton(this);
 
     if (ui::MaterialDesignController::IsModeMaterial()) {
-      gfx::ImageSkia image = gfx::CreateVectorIcon(gfx::VectorIconId::BAR_CLOSE,
-                                                   16, gfx::kChromeIconGrey);
+      gfx::ImageSkia image = gfx::CreatePrimaryVectorIcon(
+          gfx::VectorIconId::BAR_CLOSE, gfx::kChromeIconGrey);
       close_button_->SetImage(views::CustomButton::STATE_NORMAL, &image);
     } else {
       ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();