Fix appearance of PWA security chip.

The preferred height is used during layout of the PWA window frame
(CustomTabBarView), so remove obsolete/misleading comment and restore old
layout behavior.

Bug: 1026519
Change-Id: I015f9bcc0fb4661f73603b3a46acfae937e2f1a1
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1949203
Auto-Submit: Evan Stade <estade@chromium.org>
Reviewed-by: Tommy Li <tommycli@chromium.org>
Commit-Queue: Evan Stade <estade@chromium.org>
Cr-Commit-Position: refs/heads/master@{#721523}

chrome/browser/ui/views/location_bar/icon_label_bubble_view.cc

@@ -414,8 +414,7 @@ gfx::Size IconLabelBubbleView::GetSizeForLabelWidth(int label_width) const {
       shrinking ? image_size.width() : grow_animation_starting_width_;
   const int max_width = image_size.width() + GetInternalSpacing() + label_width;
 
-  // Height is ignored.
-  return gfx::Size(GetWidthBetween(min_width, max_width), 1);
+  return gfx::Size(GetWidthBetween(min_width, max_width), image_size.height());
 }
 
 int IconLabelBubbleView::GetInternalSpacing() const {