Update functions instances used by device-tests and smoke-tests.

[yifanyang]

• upgrade the version of node.js used to build functions from 6 to 12
• add source code for functions instance used by smoke-tests

[google-oss-bot]

Coverage Report

Affected SDKs

• firebase-database

  SDK overall coverage changed from 50.13% (0de237d) to 50.15% (8d593e3d) by +0.02%.

  Filename	Base (0de237d)	Head (8d593e3d)	Diff
  BooleanNode.java	92.31%	100.00%	+7.69%
  ViewProcessor.java	91.79%	92.10%	+0.30%

• firebase-messaging

  SDK overall coverage changed from 83.56% (0de237d) to 83.43% (8d593e3d) by -0.14%.

  Filename	Base (0de237d)	Head (8d593e3d)	Diff
  TopicsSubscriber.java	91.38%	89.66%	-1.72%

• firebase-storage

  SDK overall coverage changed from 85.48% (0de237d) to 85.43% (8d593e3d) by -0.04%.

  Filename	Base (0de237d)	Head (8d593e3d)	Diff
  UploadTask.java	80.22%	79.85%	-0.37%

Test Logs

• Base (0de237d2): https://android-ci.firebaseopensource.com/view/gcs/android-ci/logs/postsubmit-check-coverage/1359551064285646854
• Head (8d593e3d): https://android-ci.firebaseopensource.com/view/gcs/android-ci/pr-logs/pull/firebase_firebase-android-sdk/2429/check-coverage-changed/1359570064604401668

Notes

HTML coverage reports can be produced locally with ./gradlew <product>:checkCoverage.
Report files are located at <product-build-dir>/reports/jacoco/.

Head commit (8d593e3d) is created by Prow via merging commits: 0de237d ab53d1f.

[google-oss-bot]

Binary Size Report

Affected SDKs

No changes between base commit (0de237d) and head commit (8d593e3d).

Test Logs

• Base (0de237d2): https://android-ci.firebaseopensource.com/view/gcs/android-ci/logs/postsubmit-binary-size/1359551064285646852
• Head (8d593e3d): https://android-ci.firebaseopensource.com/view/gcs/android-ci/pr-logs/pull/firebase_firebase-android-sdk/2429/binary-size/1359570064604401670

Notes

Head commit (8d593e3d) is created by Prow via merging commits: 0de237d ab53d1f.

[yifanyang]

/test device-check-changed

[yifanyang]

/test device-check-changed

[yifanyang]

/test device-check-changed

[rlazo]

We don't need the emulator anymore?

[yifanyang]

This npm module has been deprecated: https://www.npmjs.com/package/@google-cloud/functions-emulator. One of the recommended alternative is to start emulator with firebase-tools, which is the same tool used to deploy functions. So I think it's no longer needed here.

[rlazo]

Since this is actual code, AFAIK it needs the copyright header.

[yifanyang]

Done.

[google-oss-bot]

@yifanyang: The following test failed, say /retest to rerun them all:

Test name	Commit	Details	Rerun command
device-check-changed	ab53d1f	link	/test device-check-changed

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