Don't stack-allocate binder objects.

These inherit from RefBase and need to be owned in an sp<>.

Bug: 36854729
Test: manual on Pixel phone
Change-Id: I5ac6f50c1a21d4c8b224d41149b16da4d438dba7
Merged-In: I54dac1298dca1eb3ab5e6751366ba67bb2e1906c
2 files changed