896ce2b5aa
Bug: b/119276649 Merge from: http://go/wvgerrit/66367 Test: Android, CE CDM, Linux unit tests The FileSystem interface as it exists expects an Open for a file and then a Close when finished. However, the Close doesn't delete the file itself and depending on the platform, the underlying impl_ as well, leading to a memory leak. To fix this leak as well as harden against future memory issues, this change refactors the interface to shift away from raw pointers and towards smart pointers. Change-Id: I7a7132ea95cd3775796a540f510b698f4f27dd24