tree d9a8238774e138208ecc47f507aef04c6ded7025
parent 6fa0884188dbc27b59b2fa3f86fb317bb1381252
author Christopher Ferris <cferris@google.com> 1501172958 -0700
committer Christopher Ferris <cferris@google.com> 1501531235 -0700

Add support for the new unwind method.

Also add a comment to the GetElf function to indicate that it never returns
nullptr.

Bug: 23762183

Test: Built, nothing uses the new code.
Test: However, I did run backtrace_test using this code, and all tests pass.

Change-Id: I252b9c2497e2d3d94347dd6e506170bf50cbfe16