Add pywebsocket3 to DEPS

This commit updates DEPS file to add pywebsocket3 to //third_party.

Change-Id: I41a402d7d640f365712e93db01dbd85618fe082e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2059041
Reviewed-by: Adam Rice <[email protected]>
Reviewed-by: Yutaka Hirano <[email protected]>
Reviewed-by: Nico Weber <[email protected]>
Reviewed-by: Alex Gough <[email protected]>
Commit-Queue: Keita Suzuki <[email protected]>
Cr-Commit-Position: refs/heads/master@{#747094}
diff --git a/DEPS b/DEPS
index a67fde4..620647dc 100644
--- a/DEPS
+++ b/DEPS
@@ -1280,6 +1280,9 @@
   'src/third_party/pywebsocket/src':
     Var('chromium_git') + '/external/github.com/google/pywebsocket.git' + '@' + '2d7b73c3acbd0f41dcab487ae5c97c6feae06ce2',
 
+  'src/third_party/pywebsocket3/src':
+    Var('chromium_git') + '/external/github.com/GoogleChromeLabs/pywebsocket3.git' + '@' + '89c9228434100e4dabb19f61d0d4f55625940638',
+
   'src/third_party/qemu-linux-arm64': {
       'packages': [
           {