Checking in desugar into third_party

DEPS

Index: DEPS
diff --git a/DEPS b/DEPS
index 4e063bf6b418adc4bcdc6e3f3e6b3854b277610a..44cb82fec7f8ffe982d945d9f8ad2e3fc468b912 100644
--- a/DEPS
+++ b/DEPS
@@ -1063,6 +1063,16 @@ hooks_os = {
                  '-l', 'third_party/retrolambda'
       ],
     },
+    {
+      'name': 'desugar',
+      'pattern': '.',
+      'action': ['python',
+                 'src/build/android/update_deps/update_third_party_deps.py',
+                 'download',
+                 '-b', 'chromium-android-tools/bazel/desugar',
+                 '-l', 'third_party/bazel/desugar'
+      ],
+    },
     {
       'name': 'apk-patch-size-estimator',
       'pattern': '.',