Remove VectorIconId references from the codebase

components/toolbar/toolbar_model_delegate.h

Index: components/toolbar/toolbar_model_delegate.h
diff --git a/components/toolbar/toolbar_model_delegate.h b/components/toolbar/toolbar_model_delegate.h
index 8c61c451bec30739ac5428a4d93390ab7ef6771e..91008e428876c12be1131f5cc8a86ca397676bc2 100644
--- a/components/toolbar/toolbar_model_delegate.h
+++ b/components/toolbar/toolbar_model_delegate.h
@@ -50,10 +50,10 @@ class ToolbarModelDelegate {
   // Returns true if the current page fails the malware check.
   virtual bool FailsMalwareCheck() const = 0;
 
-  // Returns the id of the icon to show to the left of the address, or
-  // gfx::VectorIconId::VECTOR_ICON_NONE if the icon should be selected by the
-  // caller. This is useful for associating particular URLs with particular
-  // schemes without importing knowledge of those schemes into this component.
+  // Returns the id of the icon to show to the left of the address, or nullptr
+  // if the icon should be selected by the caller. This is useful for
+  // associating particular URLs with particular schemes without importing
+  // knowledge of those schemes into this component.
   virtual const gfx::VectorIcon* GetVectorIconOverride() const = 0;
 
  protected: