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

chrome/browser/cocoa/autocomplete_text_field.mm

Index: chrome/browser/cocoa/autocomplete_text_field.mm
diff --git a/chrome/browser/cocoa/autocomplete_text_field.mm b/chrome/browser/cocoa/autocomplete_text_field.mm
index 1f2c23f43cc58bbc90979809a5bf17fc57c79e76..60a7a56e5d2993e1f01febb2213461e9df094d7d 100644
--- a/chrome/browser/cocoa/autocomplete_text_field.mm
+++ b/chrome/browser/cocoa/autocomplete_text_field.mm
@@ -94,7 +94,8 @@
   const NSPoint locationInWindow = [theEvent locationInWindow];
   const NSPoint location = [self convertPoint:locationInWindow fromView:nil];
 
-  const NSRect textFrame = [[self cell] textFrameForFrame:[self bounds]];
+  AutocompleteTextFieldCell* cell = [self cell];
+  const NSRect textFrame([cell textFrameForFrame:[self bounds]]);
 
   // A version of the textFrame which extends across the field's
   // entire width.
@@ -132,6 +133,14 @@
     return;
   }
 
+  // Check to see if the user clicked the hint icon in the cell. If so, we need
+  // to display the page info window.
+  const NSRect hintIconFrame = [cell hintImageFrameForFrame:[self bounds]];
+  if (NSMouseInRect(location, hintIconFrame, [self isFlipped])) {
+    observer_->OnSecurityIconClicked();
+    return;
+  }
+
   NSText* editor = [self currentEditor];
 
   // We should only be here if we accepted first-responder status and