[Mac] Show the page info window after clicking the security icon in the URL bar

chrome/browser/cocoa/autocomplete_text_field.h

Index: chrome/browser/cocoa/autocomplete_text_field.h
diff --git a/chrome/browser/cocoa/autocomplete_text_field.h b/chrome/browser/cocoa/autocomplete_text_field.h
index f850a27a0d7b0b59046c733fd625433065001f85..be8856129468ad701e2b6f59b373a3ec0086f316 100644
--- a/chrome/browser/cocoa/autocomplete_text_field.h
+++ b/chrome/browser/cocoa/autocomplete_text_field.h
@@ -49,6 +49,10 @@ class AutocompleteTextFieldObserver {
   // Called when the user initiates a "paste and go" or "paste and
   // search" into |field_|.
   virtual void OnPasteAndGo() = 0;
+
+  // Called when the user clicks the hint icon (i.e. the security icon) in the
+  // location bar.
+  virtual void OnSecurityIconClicked() = 0;
 };
 
 @interface AutocompleteTextField : NSTextField {