[rAC, OSX] Always close error bubble on focus loss

BUG=331124
R=isherman@chromium.org

Review URL: https://codereview.chromium.org/123313002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@243338 0039d316-1c4b-4281-b951-d872f2087c98

chrome/browser/ui/cocoa/autofill/autofill_details_container.mm

@@ -207,7 +207,7 @@ typedef BOOL (^FieldFilterBlock)(NSView<AutofillInputField>*);
 }
 
 - (void)hideErrorBubble {
-  [errorBubble_ setHidden:YES];
+  [errorBubbleController_ close];
 }
 
 - (void)updateMessageForField:(NSControl<AutofillInputField>*)field {