Revert of Delete pre-MD code from OmniboxResultView

components/toolbar/test_toolbar_model.cc

Index: components/toolbar/test_toolbar_model.cc
diff --git a/components/toolbar/test_toolbar_model.cc b/components/toolbar/test_toolbar_model.cc
index 4188361ce8936bbc97ab141ff678e3c0a96ca70f..31d0f5d0b40d2ca7926ea0f41a597441d6ad4c6f 100644
--- a/components/toolbar/test_toolbar_model.cc
+++ b/components/toolbar/test_toolbar_model.cc
@@ -4,6 +4,7 @@
 
 #include "components/toolbar/test_toolbar_model.h"
 
+#include "components/grit/components_scaled_resources.h"
 #include "ui/gfx/vector_icons_public.h"
 
 TestToolbarModel::TestToolbarModel()
@@ -31,6 +32,11 @@
   return security_level_;
 }
 
+int TestToolbarModel::GetIcon() const {
+  // This placeholder implementation should be removed when MD is default.
+  return IDR_LOCATION_BAR_HTTP;
+}
+
 gfx::VectorIconId TestToolbarModel::GetVectorIcon() const {
   return icon_;
 }