ash: Resize label text in Status Tray feature pod to avoid truncation

Old UI:
https://screenshot.googleplex.com/1twKi3vamGm

New UI:
https://screenshot.googleplex.com/5o2mTDpZQyn

New UI works with long string:
https://screenshot.googleplex.com/M3yV8qPdsbL

Change-Id: Ic7fdb33f4e3d8f091ddef36a4ca6e5bea57e4fee
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2255500Reviewed-by: Tim Song <tengs@chromium.org>
Commit-Queue: Andre Le <leandre@chromium.org>
Cr-Commit-Position: refs/heads/master@{#781401}

ash/system/tray/tray_constants.h

@@ -163,7 +163,7 @@ constexpr gfx::Size kUnifiedFeaturePodCollapsedSize(46, 46);
 constexpr gfx::Insets kUnifiedFeaturePodIconPadding(4);
 constexpr gfx::Insets kUnifiedFeaturePodHoverPadding(2);
 constexpr int kUnifiedFeaturePodVectorIconSize = 20;
-constexpr int kUnifiedFeaturePodLabelWidth = 80;
+constexpr int kUnifiedFeaturePodLabelWidth = 85;
 constexpr int kUnifiedFeaturePodSpacing = 6;
 constexpr int kUnifiedFeaturePodHoverCornerRadius = 4;
 constexpr int kUnifiedFeaturePodVerticalPadding = 24;