chore: adding cloud-rad java xrefs (#1787)

This PR was generated using Autosynth. 🌈 Synth log will be available here: https://source.cloud.google.com/results/invocations/0cc59cf8-7a9f-4a86-a52e-a4a3158a6529/targets - [ ] To automatically regenerate this PR, check this box. (May take up to 24 hours.) Source-Link: googleapis/synthtool@046994f

Author: yoshi-automation

.kokoro/release/publish_javadoc11.sh

@@ -49,6 +49,13 @@ pushd target/docfx-yml
 python3 -m docuploader create-metadata \
  --name ${NAME} \
  --version ${VERSION} \
+ --xrefs devsite://java/gax \
+ --xrefs devsite://java/google-cloud-core \
+ --xrefs devsite://java/api-common \
+ --xrefs devsite://java/proto-google-common-protos \
+ --xrefs devsite://java/google-api-client \
+ --xrefs devsite://java/google-http-client \
+ --xrefs devsite://java/protobuf \
  --language java
 
 # upload yml to production bucket

synth.metadata

@@ -4,14 +4,14 @@
  "git": {
  "name": ".",
  "remote": "https://github.com/googleapis/google-api-java-client.git",
- "sha": "441e1cc3d12271a5590451e147d5fd46bc83f868"
+ "sha": "dbeebd8be5c60cbe60aeda97eeea4b4dca99c0d6"
  }
  },
  {
  "git": {
  "name": "synthtool",
  "remote": "https://github.com/googleapis/synthtool.git",
- "sha": "8285c2b4cdbc3771d031ad91e1c4ec9e55fff45d"
+ "sha": "046994f491c02806aea60118e214a9edd67f5ab7"
  }
  }
  ],