Add public API for setting the fill color on a text object

BUG=pdfium:719
R=npm@chromium.org

Change-Id: Ifd9330de265f8419d588b65fbd6a6187f17badd1
Reviewed-on: https://pdfium-review.googlesource.com/5950
Reviewed-by: Nicolás Peña <npm@chromium.org>
Commit-Queue: Nicolás Peña <npm@chromium.org>
diff --git a/AUTHORS b/AUTHORS
index 7499c10..9b63c71 100644
--- a/AUTHORS
+++ b/AUTHORS
@@ -31,7 +31,8 @@
 Nico Weber <thakis@chromium.org>
 Peter Kasting <pkasting@chromium.org>
 Raymes Khoury <raymes@chromium.org>
-Reid Kleckner <rnk@chromium.org>
+Reid Kleckner <rnk@chromium.org>

+Ryan Wiley <wileyrr@gmail.com>
 Robert Sesek <rsesek@chromium.org>
 Sam Clegg <sbc@chromium.org>
 Thomas Sepez <tsepez@chromium.org>