Implemented basic heap memory allocation tracking in MallocHooks using hooks registered with tcmall…

Implemented basic heap memory allocation tracking in MallocHooks using hooks registered with tcmalloc. Also updated BUILD.gn files to account for include paths within the tcmalloc project.

Fixed build issues from original submission.

BUG=
R=zra@google.com

Review-Url: https://codereview.chromium.org/2623613003 .
Committed: https://github.com/dart-lang/sdk/commit/5290052550f89399f7c5ad86aeab73d6693c7057

[bkonyi, 2017-01-19 20:52:44]

bkonyi@google.com changed reviewers:
+ zra@google.com

[bkonyi, 2017-01-19 20:52:44]

https://codereview.chromium.org/2644903003/diff/1/runtime/vm/malloc_hooks_uns...
File runtime/vm/malloc_hooks_unsupported.cc (right):

https://codereview.chromium.org/2644903003/diff/1/runtime/vm/malloc_hooks_uns...
runtime/vm/malloc_hooks_unsupported.cc:13: void MallocHooks::InitOnce() {
Apparently I had forgotten to change the names of the methods in this file to
match the header. That's the only change in this CL that wasn't in the previous
submission.

[zra, 2017-01-19 20:56:40]

lgtm

[bkonyi, 2017-01-19 21:16:04]

Description was changed from

==========
Implemented basic heap memory allocation tracking in MallocHooks using hooks
registered with tcmalloc. Also updated BUILD.gn files to account for include
paths within the tcmalloc project.

Fixed build issues from original submission.

BUG=

Review-Url: https://codereview.chromium.org/2623613003 .
==========

to

==========
Implemented basic heap memory allocation tracking in MallocHooks using hooks
registered with tcmalloc. Also updated BUILD.gn files to account for include
paths within the tcmalloc project.

Fixed build issues from original submission.

BUG=
R=zra@google.com

Review-Url: https://codereview.chromium.org/2623613003 .
Committed:
https://github.com/dart-lang/sdk/commit/5290052550f89399f7c5ad86aeab73d6693c7057
==========

[bkonyi, 2017-01-19 21:16:06]

Committed patchset #1 (id:1) manually as
5290052550f89399f7c5ad86aeab73d6693c7057 (presubmit successful).