My vote would be to make TextViewWithClickableSpans extend from TextViewWithLeading since as it stands TVWithLeading is fairly lightweight and only adds some XML processing on startup.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/adb2242fa2f2ed33f66cf15f1ff0871bb22d2e2b

commit adb2242fa2f2ed33f66cf15f1ff0871bb22d2e2b
Author: Peter E Conn <peconn@chromium.org>
Date: Mon Oct 09 09:28:39 2017

✒️ Extend TextViewWithClickableSpans from TextViewWithLeading.

This allows text leading to be set in TextViewWithClickableSpans.

TextViewWithLeading is a lightweight extension of TextView, so
using it as the superclass of TextViewWithClickableSpans should add
only negligable complexity, easily ignored in the case we don't need
to set leading,

Bug:  772019 
Change-Id: I03d759c77c9d78ee934e0635762448ff5ed8c354
Reviewed-on: https://chromium-review.googlesource.com/704814
Reviewed-by: Ted Choc <tedchoc@chromium.org>
Reviewed-by: Bernhard Bauer <bauerb@chromium.org>
Commit-Queue: Peter Conn <peconn@chromium.org>
Cr-Commit-Position: refs/heads/master@{#507342}
[modify] https://crrev.com/adb2242fa2f2ed33f66cf15f1ff0871bb22d2e2b/ui/android/java/src/org/chromium/ui/widget/TextViewWithClickableSpans.java
[modify] https://crrev.com/adb2242fa2f2ed33f66cf15f1ff0871bb22d2e2b/ui/android/java/src/org/chromium/ui/widget/TextViewWithLeading.java