Add R8 to DEPS.

Chromium has switched to using the r8 dexer from dx, so we need to
switch as well.

Bug: None
Change-Id: I8c7845bd100ad21c6142a35e7f266a2aa37563b0
Reviewed-on: https://webrtc-review.googlesource.com/82062
Commit-Queue: Patrik Höglund <phoglund@webrtc.org>
Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#23546}
diff --git a/DEPS b/DEPS
index 7390ecc..41ce4ae 100644
--- a/DEPS
+++ b/DEPS
@@ -148,6 +148,16 @@
   },
   'src/third_party/openh264/src':
     Var('chromium_git') + '/external/github.com/cisco/openh264' + '@' + '3b51f16a4a41df729f8d647f03e48c5f272911ff',
+  'src/third_party/r8': {
+      'packages': [
+          {
+              'package': 'chromium/third_party/r8',
+              'version': 'version:1.0.30',
+          },
+      ],
+      'condition': 'checkout_android',
+      'dep_type': 'cipd',
+  },
   'src/third_party/requests/src': {
     'url': Var('chromium_git') + '/external/github.com/kennethreitz/requests.git' + '@' + 'f172b30356d821d180fa4ecfa3e71c7274a32de4',
     'condition': 'checkout_android',