Merge "Add trace to measure "addForInitLI" method in installPackagesFromDir"

            if (throwable == null) {

                try {

                    Trace.traceBegin(TRACE_TAG_PACKAGE_MANAGER, "addForInitLI");

                    addForInitLI(parseResult.parsedPackage, parseFlags, scanFlags,

                            new UserHandle(UserHandle.USER_SYSTEM), apexInfo);

                } catch (PackageManagerException e) {

                    errorCode = e.error;

                    errorMsg = "Failed to scan " + parseResult.scanFile + ": " + e.getMessage();

                    Slog.w(TAG, errorMsg);

                } finally {

                    Trace.traceEnd(TRACE_TAG_PACKAGE_MANAGER);

                }

            } else if (throwable instanceof PackageManagerException) {

                PackageManagerException e = (PackageManagerException) throwable;