Always use vector icons for desktop infobars (when one is defined).

components/infobars/core/infobar_delegate.cc

Index: components/infobars/core/infobar_delegate.cc
diff --git a/components/infobars/core/infobar_delegate.cc b/components/infobars/core/infobar_delegate.cc
index 849811e051012c5c5bff6f29d078eb1a4097ebd8..dcb70f59090f80b5419461843378018939bcef61 100644
--- a/components/infobars/core/infobar_delegate.cc
+++ b/components/infobars/core/infobar_delegate.cc
@@ -43,14 +43,12 @@ gfx::VectorIconId InfoBarDelegate::GetVectorIconId() const {
 
 gfx::Image InfoBarDelegate::GetIcon() const {
 #if !defined(OS_IOS) && !defined(OS_ANDROID)
-  if (ui::MaterialDesignController::IsModeMaterial()) {
-    gfx::VectorIconId vector_id = GetVectorIconId();
-    if (vector_id != gfx::VectorIconId::VECTOR_ICON_NONE) {
-      return gfx::Image(gfx::CreateVectorIcon(vector_id, 16,
-                                              GetInfoBarType() == WARNING_TYPE
-                                                  ? SkColorSetRGB(0xFF, 0x67, 0)
-                                                  : gfx::kGoogleBlue500));
-    }
+  gfx::VectorIconId vector_id = GetVectorIconId();
+  if (vector_id != gfx::VectorIconId::VECTOR_ICON_NONE) {
+    return gfx::Image(gfx::CreateVectorIcon(vector_id, 16,
+                                            GetInfoBarType() == WARNING_TYPE
+                                                ? SkColorSetRGB(0xFF, 0x67, 0)
+                                                : gfx::kGoogleBlue500));
   }
 #endif