Prevent a deadlock in #abandon
See b/159568595#comment1 for analysis.
1. rename cleanStageDir to cleanStageDirNotLocked to show it must be
called without mLock held.
2. rename getChildSessions to getChildSessionsNotLocked to show it must
be called without mLock held.
3. add cleanStageDir(List<PackageInstallerSession>) which is callable
when mLock is held.
Bug: 159568595
Test: atest StagedInstallTest
Merged-In: I512ea07a4f8750431b306fa6e3c47a600a50b64f
Change-Id: I512ea07a4f8750431b306fa6e3c47a600a50b64f
(cherry picked from commit 4ce1273f926851bb58d44f59b5643373d4567c81)
1 file changed