Currently more config values are being kept than necessesary. For
example, given config values for a string resource:
Config: default Value: "keep"
Config: ldrtl Value: "dedupe"
Config: ldrtl-night Value: "dedupe"
Config: land Value: "keep2"
The ldrtl-night config value will fail to be removed despite being
equivalent to the ldrtl value. This is because the value for the land
configuration is not equivalent to the ldrtl-night value. Instead of
checking that every compatible config value not related by dominance
should have quivalent values, only check sibling config values within
the dominator tree.
Bug: 137230022
Test: aapt2_tests
Change-Id: I965365d1a9433ae595eab48d82837ac102148334
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
