Remove unused memory functions

Remove unused memory functions

In |blink::Platform|, the functions |processMemorySizesInBytes| and
|memoryAllocatorWasteInBytes| are unused. Let's remove them.

The function |base::allocator::GetAllocatorWasteSize| is not used
anywhere except in the unused Blink functions, so it can be removed as
well.

Detailed information about memory allocators is available in the memory-
infra category of chrome://tracing. It supports all allocators, not just
tcmalloc. |GetAllocatorWasteSize| was implemented for tcmalloc only.

Committed: https://crrev.com/8e7faebfbdee8e62471a7ee839279f184b68980a
Cr-Commit-Position: refs/heads/master@{#361303}

[Ruud van Asseldonk, 2015-11-23 12:03:09]

Description was changed from

==========
[Blink] Remove unused memory functions from Platform

The functions |processMemorySizesInBytes| and
|memoryAllocatorWasteInBytes| are unused. Let's remove them.
==========

to

==========
Remove unused memory functions

In |blink::Platform|, the functions |processMemorySizesInBytes| and
|memoryAllocatorWasteInBytes| are unused. Let's remove them.

The function |base::allocator::GetAllocatorWasteSize| is not used
anywhere except in the unused Blink functions, so it can be removed as
well.

Detailed information about memory allocators is available in the memory-
infra category of chrome://tracing. It supports all allocators, not just
tcmalloc. |GetAllocatorWasteSize| was implemented for tcmalloc only.
==========

[Ruud van Asseldonk, 2015-11-23 13:17:28]

ruuda@google.com changed reviewers:
+ brettw@chromium.org, wfh@chromium.org

[Ruud van Asseldonk, 2015-11-23 13:17:29]

brettw, wfh, can you please take a look at this cleanup CL?

[brettw, 2015-11-23 19:22:55]

lgtm

[Will Harris, 2015-11-23 21:35:06]

base/allocator lgtm

[Primiano Tucci (use gerrit), 2015-11-24 10:11:54]

primiano@chromium.org changed reviewers:
+ primiano@chromium.org

[Primiano Tucci (use gerrit), 2015-11-24 10:11:55]

lgtm

[Ruud van Asseldonk, 2015-11-24 10:12:10]

The CQ bit was checked by ruuda@google.com

[commit-bot: I haz the power, 2015-11-24 10:12:31]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1468033002/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1468033002/20001

[commit-bot: I haz the power, 2015-11-24 10:19:45]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2015-11-24 10:20:24]

Patchset 2 (id:??) landed as
https://crrev.com/8e7faebfbdee8e62471a7ee839279f184b68980a
Cr-Commit-Position: refs/heads/master@{#361303}