Increase toolbar height in fullscreen to 30pt

Bug: 848271
Cq-Include-Trybots: luci.chromium.try:ios-simulator-full-configs;master.tryserver.chromium.mac:ios-simulator-cronet
Change-Id: Ie1fab9a63e1b7ca442d3dd7c938c28205128e434
Reviewed-on: https://chromium-review.googlesource.com/1082273
Commit-Queue: Stepan Khapugin <stkhapugin@chromium.org>
Reviewed-by: Stepan Khapugin <stkhapugin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#563578}

ios/chrome/browser/ui/toolbar/buttons/toolbar_constants.mm

@@ -70,7 +70,7 @@ const CGFloat kAdaptiveLocationBarVerticalMargin = 6.0f;
 const CGFloat kToolbarHeight = 56;
 const CGFloat kTopToolbarUnsplitMargin = 2;
 const CGFloat kAdaptiveToolbarHeight = 48;
-const CGFloat kToolbarHeightFullscreen = 20;
+const CGFloat kToolbarHeightFullscreen = 30;
 
 NSString* const kToolbarToolsMenuButtonIdentifier =
     @"kToolbarToolsMenuButtonIdentifier";