libprocessinfo: improve error reporting. am: 2b96a230dc am: 1c617ca29f am: 95f156eecb am: 068269afb6

Original change: https://android-review.googlesource.com/c/platform/system/libprocinfo/+/2449538

Change-Id: Ia9e22459bf653ec98f4123fb590828d632d2486c
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>
tree: f582757d4653041fff541ee1b3eaa030ca16c6a0
  1. include/
  2. testdata/
  3. Android.bp
  4. OWNERS
  5. process.cpp
  6. process_map_benchmark.cpp
  7. process_map_test.cpp
  8. process_test.cpp
  9. TEST_MAPPING