Update native/webview OWNERS.

Add boliu@ for reviewing changes to GL functor stuff.

Change-Id: Ie7604d77251db46261498f32c53e1ec0c3af299c
diff --git a/native/webview/OWNERS b/native/webview/OWNERS
index 00e540a..580bb0f 100644
--- a/native/webview/OWNERS
+++ b/native/webview/OWNERS
@@ -1,3 +1,4 @@
+boliu@google.com
 changwan@google.com
 tobiasjs@google.com
 torne@google.com