Adding third_party/errorprone to DEPS for android

Bug: webrtc:8390
Change-Id: I6dbfcd6ddd6715ea7f9bc8b1d770c51fc7693b48
No-Try: True
Reviewed-on: https://webrtc-review.googlesource.com/9160
Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org>
Reviewed-by: Henrik Kjellander <kjellander@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#20277}
diff --git a/DEPS b/DEPS
index 778a066..ce5bca7 100644
--- a/DEPS
+++ b/DEPS
@@ -73,6 +73,10 @@
     Var('chromium_git') + '/external/colorama.git' + '@' + '799604a1041e9b3bc5d2789ecbd7e8db2e18e6b8',
   'src/third_party/depot_tools':
     Var('chromium_git') + '/chromium/tools/depot_tools.git' + '@' + 'cd27f01b1a49e4b02bad0640b6f4bd50930bcf74',
+  'src/third_party/errorprone/lib': {
+      'url': Var('chromium_git') + '/chromium/third_party/errorprone.git' + '@' + '6a55852cd7d1ef2f05a75d300495143be2a051d4',
+      'condition': 'checkout_android',
+  },
   'src/third_party/ffmpeg':
     Var('chromium_git') + '/chromium/third_party/ffmpeg.git' + '@' + '62ff55193a061c21c039a2ba0b39641136912c2e',
   # WebRTC-only dependency (not present in Chromium).