Add dummy task in javadoc plugin to generate an empty api.txt file

[rlazo]

Also add support for formatting plugin in buildSrc.

[google-oss-bot]

Coverage Report

Affected SDKs

• firebase-database

  SDK overall coverage changed from 50.21% (3f237a3) to 50.15% (0baf9b34) by -0.06%.

  Filename	Base (3f237a3)	Head (0baf9b34)	Diff
  ChildChangeAccumulator.java	96.67%	83.33%	-13.33%
  DoubleNode.java	100.00%	88.24%	-11.76%
  ViewProcessor.java	91.79%	92.10%	+0.30%

• firebase-messaging

  SDK overall coverage changed from ? (3f237a3) to 83.56% (0baf9b34) by ?.

  Click to show coverage changes in 23 files.

  Filename	Base (3f237a3)	Head (0baf9b34)	Diff
  CommonNotificationBuilder.java	?	91.63%	?
  Constants.java	?	92.86%	?
  DisplayNotification.java	?	91.38%	?
  EnhancedIntentService.java	?	80.00%	?
  ExecutorFactory.java	?	0.00%	?
  FcmExecutors.java	?	85.71%	?
  FirebaseMessaging.java	?	65.00%	?
  FirebaseMessagingRegistrar.java	?	83.33%	?
  FirebaseMessagingService.java	?	94.79%	?
  FirelogAnalyticsEvent.java	?	26.67%	?
  ImageDownload.java	?	87.18%	?
  MessagingAnalytics.java	?	63.93%	?
  NotificationParams.java	?	98.71%	?
  PoolableExecutors.java	?	29.17%	?
  RemoteMessage.java	?	95.48%	?
  RemoteMessageCreator.java	?	88.89%	?
  SendException.java	?	100.00%	?
  SharedPreferencesQueue.java	?	98.44%	?
  ThreadPriority.java	?	100.00%	?
  TopicOperation.java	?	90.00%	?
  TopicsStore.java	?	100.00%	?
  TopicsSubscriber.java	?	91.38%	?
  TopicsSyncTask.java	?	53.33%	?

• firebase-perf

  SDK overall coverage changed from 69.86% (3f237a3) to 69.84% (0baf9b34) by -0.02%.

  Filename	Base (3f237a3)	Head (0baf9b34)	Diff
  TransportManager.java	96.06%	95.57%	-0.49%

• firebase-storage

  SDK overall coverage changed from 85.88% (3f237a3) to 85.52% (0baf9b34) by -0.36%.

  Filename	Base (3f237a3)	Head (0baf9b34)	Diff
  StorageException.java	69.09%	65.45%	-3.64%
  StorageTask.java	84.89%	84.29%	-0.60%
  StreamDownloadTask.java	88.41%	88.89%	+0.48%
  UploadTask.java	82.05%	80.22%	-1.83%

Test Logs

• Base (3f237a33): https://android-ci.firebaseopensource.com/view/gcs/android-ci/logs/postsubmit-check-coverage/1362207088859680769
• Head (0baf9b34): https://android-ci.firebaseopensource.com/view/gcs/android-ci/pr-logs/pull/firebase_firebase-android-sdk/2447/check-coverage-changed/1362423523636678656

Notes

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

Head commit (0baf9b34) is created by Prow via merging commits: 3f237a3 56826c5.

[rlazo]

@yifanyang FYI All changes in this PR are in the buildSrc subdir, but somehow the coverage report points to a significant drop in coverage for firebase-database

[rlazo]

/test check-changed

[google-oss-bot]

Binary Size Report

Affected SDKs

No changes between base commit (3f237a3) and head commit (0baf9b34).

Test Logs

• Base (3f237a33): https://android-ci.firebaseopensource.com/view/gcs/android-ci/logs/postsubmit-binary-size/1362207088859680771
• Head (0baf9b34): https://android-ci.firebaseopensource.com/view/gcs/android-ci/pr-logs/pull/firebase_firebase-android-sdk/2447/binary-size/1362423523632484357

Notes

Head commit (0baf9b34) is created by Prow via merging commits: 3f237a3 56826c5.

[rlazo]

/test check-changed

[rlazo]

/test device-check-changed

[google-oss-bot]

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

Test name	Commit	Details	Rerun command
device-check-changed	56826c5	link	/test device-check-changed

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