am 2a0f9e6a: Merge "Explicitly list out the list of cache subdirs to prune."

import java.io.IOException;

import java.io.InputStream;

import java.io.OutputStream;

import java.util.List;

public final class Installer {

    private static final String TAG = "Installer";

        }

    }

    public int pruneDexCache() {

        return execute("prunedexcache");

    public int pruneDexCache(String cacheSubDir) {

        return execute("prunedexcache " + cacheSubDir);

    }

    public int freeCache(long freeStorageSize) {

                // changed. Consider this significant, and wipe away all other

                // existing dexopt files to ensure we don't leave any dangling around.

                //

                // Additionally, delete all dex files from the root directory

                // since there shouldn't be any there anyway.

                //

                // TODO: This should be revisited because it isn't as good an indicator

                // as it used to be. It used to include the boot classpath but at some point

                // DexFile.isDexOptNeeded started returning false for the boot

                // small maintenance release update that the library and tool

                // jars may be unchanged but APK could be removed resulting in

                // unused dalvik-cache files.

                mInstaller.pruneDexCache();

                for (String instructionSet : instructionSets) {

                    mInstaller.pruneDexCache(instructionSet);

                }

                // Additionally, delete all dex files from the root directory

                // since there shouldn't be any there anyway, unless we're upgrading

                // from an older OS version or a build that contained the "old" style

                // flat scheme.

                mInstaller.pruneDexCache(".");

            }

            // Collect vendor overlay packages.