Compile core-apps according to their own "reason" for A/B

        // Use the package manager install and install lock here for the OTA dex optimizer.

        PackageDexOptimizer optimizer = new OTADexoptPackageDexOptimizer(

                collectingInstaller, mPackageManagerService.mInstallLock, mContext);

        // Make sure that core apps are optimized according to their own "reason".

        // If the core apps are not preopted in the B OTA, and REASON_AB_OTA is not speed

        // (by default is speed-profile) they will be interepreted/JITed. This in itself is not a

        // problem as we will end up doing profile guided compilation. However, some core apps may

        // be loaded by system server which doesn't JIT and we need to make sure we don't

        // interpret-only

        int compilationReason = nextPackage.coreApp

                ? PackageManagerService.REASON_CORE_APP

                : PackageManagerService.REASON_AB_OTA;

        optimizer.performDexOpt(nextPackage, nextPackage.usesLibraryFiles,

                null /* ISAs */, false /* checkProfiles */,

                getCompilerFilterForReason(PackageManagerService.REASON_AB_OTA));

                getCompilerFilterForReason(compilationReason));

        mCommandsForCurrentPackage = collectingConnection.commands;

        if (mCommandsForCurrentPackage.isEmpty()) {