Use generic MessageDigest class instead of MD5 / SHA-1 specific classes.

This allows removing the specific classes in a later CL.

Bug: webrtc:8677
Change-Id: I3b9c1f3191c38e6d31a3de990e2d882505e79adc
Reviewed-on: https://webrtc-review.googlesource.com/35040
Reviewed-by: Karl Wiberg <kwiberg@webrtc.org>
Commit-Queue: Joachim Bauch <jbauch@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#21412}
diff --git a/modules/audio_coding/BUILD.gn b/modules/audio_coding/BUILD.gn
index 6365d56..d2c7e74 100644
--- a/modules/audio_coding/BUILD.gn
+++ b/modules/audio_coding/BUILD.gn
@@ -1142,6 +1142,7 @@
     "../../api:libjingle_peerconnection_api",
     "../../common_audio",
     "../../rtc_base:checks",
+    "../../rtc_base:rtc_base",
     "../../rtc_base:rtc_base_approved",
     "../../rtc_base:rtc_base_tests_utils",
     "../../test:rtp_test_utils",