Mechanical rename of tracing includes for /ppapi

Mechanical rename of tracing includes for /ppapi

This is just a mechanical rename of tracing includes.
See crrev.com/837303004 and the related bug for motivations.

BUG=451032
TBR=dmichael@chromium.org

Committed: https://crrev.com/3ca2296a8eba6c26eaba61bbd441c167138035b2
Cr-Commit-Position: refs/heads/master@{#313928}

[Primiano Tucci (use gerrit), 2015-01-30 14:53:17]

The CQ bit was checked by primiano@chromium.org

[commit-bot: I haz the power, 2015-01-30 14:54:13]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/885283004/1

[commit-bot: I haz the power, 2015-01-30 15:57:57]

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

[commit-bot: I haz the power, 2015-01-30 15:57:58]

Try jobs failed on following builders:
  linux_chromium_chromeos_rel_ng on tryserver.chromium.linux
(http://build.chromium.org/p/tryserver.chromium.linux/builders/linux_chromium_...)

[dmichael (off chromium), 2015-01-30 16:01:08]

lgtm

[dmichael (off chromium), 2015-01-30 16:01:12]

The CQ bit was checked by dmichael@chromium.org

[commit-bot: I haz the power, 2015-01-30 16:01:31]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/885283004/1

[commit-bot: I haz the power, 2015-01-30 17:09:11]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-01-30 17:10:28]

Patchset 1 (id:??) landed as
https://crrev.com/3ca2296a8eba6c26eaba61bbd441c167138035b2
Cr-Commit-Position: refs/heads/master@{#313928}