get rid of another inappropriate ToLowerASCII

components/autofill/core/browser/autofill_popup_delegate.h

Index: components/autofill/core/browser/autofill_popup_delegate.h
diff --git a/components/autofill/core/browser/autofill_popup_delegate.h b/components/autofill/core/browser/autofill_popup_delegate.h
index 97d60976b0722581e7a70041cf55a0e07fd7e592..2eff7c1141f8fc1fbd78fb966f3fae6fad43ea8f 100644
--- a/components/autofill/core/browser/autofill_popup_delegate.h
+++ b/components/autofill/core/browser/autofill_popup_delegate.h
@@ -28,8 +28,9 @@ class AutofillPopupDelegate {
   virtual void DidAcceptSuggestion(const base::string16& value,
                                    int identifier) = 0;
 
-  // Delete the described suggestion.
-  virtual void RemoveSuggestion(const base::string16& value,
+  // Delete the described suggestion. Returns true if something was deleted,
+  // or false if deletion is not allowed.
+  virtual bool RemoveSuggestion(const base::string16& value,
                                 int identifier) = 0;
 
   // Informs the delegate that the Autofill previewed form should be cleared.