[tracing] Get rid of MemoryAllocatorAttributesTypeInfo

[tracing] Get rid of MemoryAllocatorAttributesTypeInfo

This is in preparation of crrev.com/1105143003 which simplifies
the MemoryAllocatorDump attributes model with a more generic
one.

BUG=466141
Committed: https://crrev.com/61add08de1b39866f8dd4c946f131fbff035d8a8
Cr-Commit-Position: refs/heads/master@{#327272}

[Primiano Tucci (use gerrit), 2015-04-27 22:40:34]

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

[Primiano Tucci (use gerrit), 2015-04-27 22:40:35]

PTAL, this is just removing files

This is part of a series of 3 CLs to cleanup the MDM/MAD interface in
preparation for the upcoming Blink plumbing.

1) crrev.com/1107093004 (Simplify MemoryDumpProvider interface)
2*) crrev.com/1104413002 [THIS CL] (Get rid of
MemoryAllocatorAttributesTypeInfo)  
3) crrev.com/1105143003 (Simplify the MemoryAllocatorDump API)

[nduca, 2015-04-28 00:25:56]

lgtm

[Primiano Tucci (use gerrit), 2015-04-28 08:06:20]

The CQ bit was checked by primiano@chromium.org

[commit-bot: I haz the power, 2015-04-28 08:06:42]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1104413002/1

[commit-bot: I haz the power, 2015-04-28 08:15:05]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2015-04-28 08:15:05]

Try jobs failed on following builders:
  android_chromium_gn_compile_dbg on tryserver.chromium.linux (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.linux/builders/android_chromiu...)
  linux_chromium_gn_chromeos_rel on tryserver.chromium.linux (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.linux/builders/linux_chromium_...)
  linux_chromium_gn_dbg on tryserver.chromium.linux (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.linux/builders/linux_chromium_...)

[Primiano Tucci (use gerrit), 2015-04-28 10:21:38]

The CQ bit was checked by primiano@chromium.org

[commit-bot: I haz the power, 2015-04-28 10:21:46]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1104413002/1

[commit-bot: I haz the power, 2015-04-28 12:47:23]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-04-28 13:46:11]

Patchset 1 (id:??) landed as
https://crrev.com/61add08de1b39866f8dd4c946f131fbff035d8a8
Cr-Commit-Position: refs/heads/master@{#327272}