[SharingHub] Add padding to end of bottom row

Bug: 1009124
Change-Id: Id35faff3cc3f0caa0a4200c40d803a07a32cf01f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2128460
Commit-Queue: Kyle Milka <kmilka@chromium.org>
Commit-Queue: Matthew Jones <mdjones@chromium.org>
Auto-Submit: Kyle Milka <kmilka@chromium.org>
Reviewed-by: Matthew Jones <mdjones@chromium.org>
Cr-Commit-Position: refs/heads/master@{#754706}

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

@@ -25,5 +25,6 @@
       android:layout_height="113dp"
       android:minHeight="@dimen/min_touch_target_size"
       android:orientation="horizontal"
+      android:paddingEnd="16dp"
       android:id="@+id/share_sheet_other_apps" />
 </LinearLayout>