Audio latency updates

Add priority inversion as one of the contributors to audio latency.
Add more tips to latency measurement.
Add latency video link.

Change-Id: I03080dc0ba003c6b95cd2d5eaa3b4a4dfc8960a8
diff --git a/src/devices/audio/latency_app.jd b/src/devices/audio/latency_app.jd
index 22e3984..5672147 100644
--- a/src/devices/audio/latency_app.jd
+++ b/src/devices/audio/latency_app.jd
@@ -165,10 +165,16 @@
 
 <dl>
 
-<dt><a href="https://www.youtube.com/watch?v=d3kfEeMZ65c">Google I/O 2013 - High performance audio on Android</a></dt>
+<dt><a href="https://youtu.be/d3kfEeMZ65c">High performance audio on Android</a>
+(Google I/O 2013)</dt>
 <dd>The whole video is about latency.</dd>
 
-<dt><a href="https://www.youtube.com/watch?v=92fgcUNCHic">Google I/O 2014 - Building great multi-media experiences on Android</a></dt>
+<dt><a href="https://youtu.be/92fgcUNCHic">Building great multi-media experiences on Android</a>
+(Google I/O 2014)</dt>
 <dd>The first 14 minutes are about audio in general and input latency in particular.</dd>
 
+<dt><a href="https://youtu.be/PnDK17zP9BI">Audio latency: buffer sizes</a>
+(100 Days of Google Dev)</dt>
+<dd>Describes the relationship between audio latency, buffer sizes, and task scheduling.</dd>
+
 </dl>