commit b2e858e59f4f4a055669adf99b5e94983ba69850
author Xi Cheng <chengx@chromium.org> Tue Sep 11 20:58:03 2018
committer Commit Bot <commit-bot@chromium.org> Tue Sep 11 20:58:03 2018
tree 1499404ce0c8595fb0e7fa48e2fd78219a51c026
parent 2d01c9a0b8d47e382a9dfdf627e5a6c8a7543a36

Introduce new CallStackProfileBuilder using the new StackSample encoding

We deliberately leave out the process phase metadata information in the
StackSample encoding in this CL. Implementing that metadata support will
need to be done differently to make it extensible to general metadata.
We will implement it using follow-up CLs.

The old CallStackProfileBuilder using the legacy Sample encoding is
renamed to LegacyCallStackProfileBuilder. Related files are renamed
accordingly too.

Note that the old CallStackProfileBuilder is still used in production.

Bug: 851163, 804942
Change-Id: I235bd8cc839de4e663f1d4bd49aa24485649692a
Reviewed-on: https://chromium-review.googlesource.com/1205896
Reviewed-by: François Doray <fdoray@chromium.org>
Reviewed-by: Ilya Sherman <isherman@chromium.org>
Reviewed-by: Siddhartha S <ssid@chromium.org>
Reviewed-by: Lei Zhang <thestig@chromium.org>
Reviewed-by: Alexei Filippov <alph@chromium.org>
Reviewed-by: Mike Wittman <wittman@chromium.org>
Commit-Queue: Xi Cheng <chengx@chromium.org>
Cr-Commit-Position: refs/heads/master@{#590465}