Fix spacing within holding space item chip view drag images.

Insets and child spacing were off by a little.

Bug: 1168813
Change-Id: I5b0d80d5d255aeda6ba103d43645465cc4125864
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2641337Reviewed-by: Toni Baržić <tbarzic@chromium.org>
Commit-Queue: David Black <dmblack@google.com>
Cr-Commit-Position: refs/heads/master@{#845470}

ash/system/holding_space/holding_space_drag_util.cc

@@ -39,9 +39,9 @@ namespace {
 constexpr int kDragImageItemViewCornerRadius = 8;
 constexpr int kDragImageItemViewElevation = 2;
 constexpr int kDragImageItemChipViewIconSize = 24;
-constexpr gfx::Insets kDragImageItemChipViewInsets(0, 13);
+constexpr gfx::Insets kDragImageItemChipViewInsets(8, 8, 8, /*right=*/12);
 constexpr gfx::Size kDragImageItemChipViewPreferredSize(160, 40);
-constexpr int kDragImageItemChipViewSpacing = 13;
+constexpr int kDragImageItemChipViewSpacing = 8;
 constexpr gfx::Size kDragImageItemScreenshotViewPreferredSize(104, 80);
 constexpr gfx::Insets kDragImageOverflowBadgeInsets = gfx::Insets(0, 8);
 constexpr gfx::Size kDragImageOverflowBadgeMinimumSize(24, 24);