Add a tracing API and instrument key functions in order to profile
aapt2 bottleneck. The API allows to generate systrace fragment files.
Impact on performance is neglibible with each Trace requiring less
than 1us and the final Flush operation at the end of a command
requiring around 40us.
Bug: None
Test: None
Change-Id: I51b564d3694e9384679f43b878b32295527dddf6
- Added an additional axis for generating a multi-apk split by minimum
Android SDK version. This removes any resources that will not be used
for the desired minimum SDK version. If there are multiple resources
that would be valid for any version newer than the requested minimum,
then all would be kept so that the best match can be found.
- Added a context wrapper to set the appropriate Android SDK version for
each generated artifact.
- Split out the FilterTable method to allow it to be directly tested
without the need to mock the APK writing steps.
Test: Unit tests
Test: manually run optimize command
Change-Id: I7e6018df081af9ed5d9e8aaf40ed216c1275f138
