Presumably you mean the security indicator icon?

I mean the "Learn more" button in the popup.
Updated title

Adding screenshot.
The button is the "Learn More" button in the popup.
According to https://developer.apple.com/ios/human-interface-guidelines/visual-design/layout/, minimal size should be 44x44. Today, height is 14.5

Deleted: Screen Shot 2017-03-02 at 09.30.26.png 148 KB

	Screen Shot 2017-03-02 at 09.30.26.png 148 KB View Download

Here is an after screenshot

Deleted: after.png 176 KB

	after.png 176 KB View Download

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/5992cf13afe61e422c8fcff55349f2ad778841e9

commit 5992cf13afe61e422c8fcff55349f2ad778841e9
Author: olivierrobin <olivierrobin@chromium.org>
Date: Fri Mar 03 09:14:50 2017

Make "Learn more" button bigger in the Page Info View.

According to https://developer.apple.com/ios/human-interface-guidelines/visual-design/layout/,
minimal size should be 44x44. Today, height is 14.5, making it hard to tap it.

BUG= 697508 

Review-Url: https://codereview.chromium.org/2729833002
Cr-Commit-Position: refs/heads/master@{#454549}

[modify] https://crrev.com/5992cf13afe61e422c8fcff55349f2ad778841e9/ios/chrome/browser/ui/omnibox/page_info_view_controller.mm

Can we close this bug if it's fixed? Thanks.