Migrate Baseline Profiles and Startup Profiles snippets

[pengzhi-cb]

Code snippets are for:

1. (1 snippet) https://developer.android.com/topic/performance/baselineprofiles/measure-baselineprofile
2. (1 snippet) https://developer.android.com/topic/performance/baselineprofiles/overview
3. (1 snippet) https://developer.android.com/topic/performance/startupprofiles/dex-layout-optimizations

Total: 3 code snippets (3 Kotlin and 0 XML) across 3 pages.

List of modifications

1. Measure-baselineprofile page: Replaced internal runner @RunWith(AndroidJUnit4ClassRunner::class) with @RunWith(AndroidJUnit4::class), fixed parameter name warmupIteration = 3 to warmupIterations = 3 in CompilationMode.Partial(...), and normalized spacing before the closing brace on line 76 (android_performance_baselineprofiles_measure_compilation_modes in MeasureBaselineProfile.kt).
2. Dex-layout-optimizations page: Added the missing closing brace } for the uiAutomator block so the snippet compiles and formatted startIntent(...) across multiple lines (android_performance_startupprofiles_generator in DexLayoutOptimizations.kt).

Snippets not migrated

1. Measure-baselineprofile page:
   1. None (all code snippets on the guide page are migrated).
2. Overview page:
   1. None (all code snippets on the guide page are migrated).
3. Dex-layout-optimizations page:
   1. None (all code snippets on the guide page are migrated).

[snippet-bot]

Here is the summary of changes.

You are about to add 3 region tags.

• performance/src/androidTest/java/com/example/android/performance/baselineprofiles/BaselineProfilesOverview.kt:28, tag android_performance_baselineprofiles_overview_generator
• performance/src/androidTest/java/com/example/android/performance/baselineprofiles/MeasureBaselineProfile.kt:30, tag android_performance_baselineprofiles_measure_compilation_modes
• performance/src/androidTest/java/com/example/android/performance/startupprofiles/DexLayoutOptimizations.kt:28, tag android_performance_startupprofiles_generator

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[kkuan2011]

Is it possible to remove the new snippets from the misc folder? (We don't want to add any new snippets to that module). Can they go into the performance module, or do they need to go in the performance-samples repo?

[pengzhi-cb]

Is it possible to remove the new snippets from the misc folder? (We don't want to add any new snippets to that module). Can they go into the performance module, or do they need to go in the performance-samples repo?

Oops, I did move them but the commit was lost when I move things into performance module. They are now in the proper module 2f42210

[kkuan2011]

After the move to the performance module, I think we're missingLaunchTime.kt file with its snippet?

[pengzhi-cb]

After the move to the performance module, I think we're missingLaunchTime.kt file with its snippet?

LaunchTime.kt is not missing, it's been added as part of the PR that creates the performance module. One of the reviewers wanted at least one file in the module so that it's not empty. Here is the PR: #1068

I also updated CL description to reflect this

[kkuan2011]

Looks great, thank you Peng!

[kkuan2011]

Can you rebase?

[kkuan2011]

LGTM