[EoS] Add additional padding at the bottom tile text for touchless.

This gives some space beneath the text for the focus ring.

Bug: 935795
Change-Id: I6b6f2a9165814f4d376ad0f5d133c975f3cc0142
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1579701Reviewed-by: Matthew Jones <mdjones@chromium.org>
Commit-Queue: Justin DeWitt <dewittj@chromium.org>
Cr-Commit-Position: refs/heads/master@{#653640}

chrome/android/java/res/layout/explore_sites_tile_view_condensed.xml

@@ -59,5 +59,6 @@
             android:gravity="center_horizontal"
             android:lines="2"
             android:lineSpacingMultiplier="1.17"
+            android:layout_marginBottom="@dimen/explore_sites_tile_view_text_margin_bottom_condensed"
             android:textAppearance="@style/TextAppearance.BlackCaptionDefault" />
 </org.chromium.chrome.browser.explore_sites.ExploreSitesTileView>

chrome/android/java/res/values/dimens.xml

@@ -386,6 +386,7 @@
     <dimen name="explore_sites_tile_view_title_margin_top_condensed">51dp</dimen>
     <dimen name="explore_sites_tile_view_width_condensed">72dp</dimen>
     <dimen name="explore_sites_tile_view_icon_padding_horizontal_condensed">4dp</dimen>
+    <dimen name="explore_sites_tile_view_text_margin_bottom_condensed">4dp</dimen>
 
     <!-- Recent tabs page -->
     <dimen name="recent_tabs_visible_separator_padding">8dp</dimen>