Update Android owners for content/browser/renderer_host

Updating owners as khushalsagar@ and ericrk@ have been maintaining
compositor_impl_android* and would like owners for this and related
android code under renderer_host.

Change-Id: I2d549bbfd307c0d6e931bfcb47001e2349b6aace
Reviewed-on: https://chromium-review.googlesource.com/1114060Reviewed-by: Timothy Dresser <tdresser@chromium.org>
Commit-Queue: Eric Karl <ericrk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#570146}

content/browser/renderer_host/OWNERS

@@ -11,6 +11,10 @@ asvitkine@chromium.org
 kbr@chromium.org
 ccameron@chromium.org
 
+# for *android*
+per-file *android*=ericrk@chromium.org
+per-file *android*=khushalsagar@chromium.org
+
 # For touch/gesture specific changes
 rjkroege@chromium.org
 sadrul@chromium.org