Some cleanup in AabUpdaterTest

[lfkellogg]

Based on comments in #3920

[github-actions]

Unit Test Results

139 tests  ±0   139 ✔️ ±0   38s ⏱️ +5s
  15 suites ±0       0 💤 ±0 
  15 files   ±0       0 ❌ ±0 

Results for commit 882a938. ± Comparison against base commit e2e41f5.

[google-oss-bot]

Coverage Report ¹

Affected Products

No changes between base commit (e2e41f5) and merge commit (679c19d).

Test Logs

• Base (e2e41f5): https://android-ci.firebaseopensource.com/view/gcs/android-ci/logs/postsubmit-check-coverage/1549491855190659074
• Merge (679c19d): https://android-ci.firebaseopensource.com/view/gcs/android-ci/pr-logs/pull/firebase_firebase-android-sdk/3921/check-coverage-changed/1549502297078239234

Notes

• Commit (679c19d) is created by Prow via merging PR base commit (e2e41f5) and head commit (882a938).
• Run gradle <product>:checkCoverage to produce HTML coverage reports locally. After gradle commands finished, report files can be found under <product-build-dir>/reports/jacoco/.

1. https://storage.googleapis.com/firebase-sdk-metric-reports/mIZSv9kERv.html

[jladieu]

Cool!

[google-oss-bot]

Size Report ¹

Affected Products

No changes between base commit (e2e41f5) and merge commit (679c19d).

Test Logs

• Base (e2e41f5): https://android-ci.firebaseopensource.com/view/gcs/android-ci/logs/postsubmit-binary-size/1549491855190659076
• Merge (679c19d): https://android-ci.firebaseopensource.com/view/gcs/android-ci/pr-logs/pull/firebase_firebase-android-sdk/3921/binary-size/1549502297078239235

Notes

• Commit (679c19d) is created by Prow via merging PR base commit (e2e41f5) and head commit (882a938).

1. https://storage.googleapis.com/firebase-sdk-metric-reports/wwL3pZNYJK.html

[google-oss-bot]

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

Test name	Commit	Details	Rerun command
smoke-tests	882a938	link	/test smoke-tests

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