docs/memory: update contact points

Sadly dskiba and mariakhomenko are moving on to work on something else.
We are scraping really hard to fill the gaps. Updating the docs to the
new harsh realities.

Bug: None
Change-Id: I2e8899ad975ba1279a95ce4f702d20756981ed47
Reviewed-on: https://chromium-review.googlesource.com/1106617
Commit-Queue: Egor Pasko <pasko@chromium.org>
Reviewed-by: Maria Khomenko <mariakhomenko@chromium.org>
Reviewed-by: Siddhartha S <ssid@chromium.org>
Cr-Commit-Position: refs/heads/master@{#568787}

docs/memory/README.md

@@ -68,15 +68,15 @@ Second, familiarize yourself with the following:
 ## Key knowledge areas and contacts
 | Knowledge Area | Contact points |
 |----------------|----------------|
-| Chrome on Android | mariakhomenko, dskiba, ssid |
-| Browser Process | mariakhomenko, dskiba, ssid |
+| Chrome on Android | lizeb, pasko, ssid |
+| Browser Process | ssid, erikchen, etienneb |
 | GPU/cc | ericrk |
-| Memory metrics | erikchen, primano, ajwong, wez |
-| Native Heap Profiling | primiano, dskiba, ajwong |
+| Memory metrics | ssid, erikchen, primano, ajwong, wez |
+| Native Heap Profiling | primiano, ajwong |
 | Net Stack | mmenke, rsleevi, xunjieli |
 | Renderer Process | haraken, tasak, hajimehoshi, keishi, hiroshige |
 | V8 | hpayer, ulan, verwaest, mlippautz |
-| Out of Process Heap Profiling | erikchen, ajwong, brettw, etienneb
+| Out of Process Heap Profiling | erikchen, ajwong, brettw, etienneb |
 
 
 ## Other docs