[NTP][RQ] Visual tweaks to the MV tiles

- takes 4px off the top padding of the tile and gives it to the bottom
  padding.
- takes 4px off the top margin of the title pill and gives it to the
  top/bottom padding of the title pill.

before: screenshot/4aAFKmpkL76Qjam
after: screenshot/8MXKqLJgqyFSxz7

Fixed: 1147217
Change-Id: I59fcfa419c725b5c2f7ddbfefda6d233595494e7
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2530202
Auto-Submit: Moe Ahmadi <mahmadi@chromium.org>
Reviewed-by: Tibor Goldschwendt <tiborg@chromium.org>
Commit-Queue: Moe Ahmadi <mahmadi@chromium.org>
Cr-Commit-Position: refs/heads/master@{#826111}

chrome/browser/resources/new_tab_page/most_visited.html

@@ -64,7 +64,8 @@
     margin-top: 3px;
     opacity: 1;
     outline: none;
-    padding-top: 16px;
+    padding-bottom: 4px;
+    padding-top: 12px;
     position: relative;
     text-decoration: none;
     transition-duration: 300ms;
@@ -83,7 +84,6 @@
     background-color: transparent;
     border: none;
     box-shadow: none;
-    padding: 16px 0 0;
   }
 
   :host(:not([reordering_])) .tile:hover,
@@ -114,8 +114,8 @@
     display: flex;
     height: var(--title-height);
     line-height: calc(var(--title-height) / 2);
-    margin-top: 16px;
-    padding: 0 8px;
+    margin-top: 12px;
+    padding: 2px 8px;
     width: 88px;
   }