Read /proc/self/smaps in perfetto_hprof.

This will allow us to debug issues related to dexfiles being extracted
into RAM.

Test: flash aosp_blueline-userdebug and profile.
Bug: 150930222

This is a cherry-pick of 4b79ef49dce84b8e4c08d25b73411329fc6a0d55

Change-Id: Id3af447794c04f776e429c5f5688e762af265531
Merged-In: Id3af447794c04f776e429c5f5688e762af265531
1 file changed