Adjust various location bar element spacings.

Minor improvements to the location bar layout.

Bug: 865379
Cq-Include-Trybots: luci.chromium.try:ios-simulator-full-configs;master.tryserver.chromium.mac:ios-simulator-cronet
Change-Id: I5a7bfbc397cda4fdb607166dd7d5f0c3dfc468e1
Reviewed-on: https://chromium-review.googlesource.com/1151196Reviewed-by: Elodie Banel <lod@chromium.org>
Commit-Queue: Stepan Khapugin <stkhapugin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#578287}

ios/chrome/browser/ui/location_bar/location_bar_steady_view.mm

@@ -22,8 +22,11 @@ namespace {
 const CGFloat kButtonSize = 24;
 
 // Space between the location icon and the location label.
-const CGFloat kLocationImageToLabelSpacing = 2.0;
-
+const CGFloat kLocationImageToLabelSpacing = -4.0;
+// Minimal horizontal padding between the leading edge of the location bar and
+// the content of the location bar.
+const CGFloat kLocationBarLeadingPadding = 5.0;
+// Trailing space between the button and the trailing edge of the location bar.
 const CGFloat kButtonTrailingSpacing = 10;
 
 }  // namespace
@@ -181,7 +184,8 @@ const CGFloat kButtonTrailingSpacing = 10;
 
     [NSLayoutConstraint activateConstraints:@[
       [_locationContainerView.leadingAnchor
-          constraintGreaterThanOrEqualToAnchor:self.leadingAnchor],
+          constraintGreaterThanOrEqualToAnchor:self.leadingAnchor
+                                      constant:kLocationBarLeadingPadding],
       [_trailingButton.centerYAnchor
           constraintEqualToAnchor:self.centerYAnchor],
       [_locationContainerView.centerYAnchor