Pepper: Miscellaneous trusted plugin cleanup.

Pepper: Miscellaneous trusted plugin cleanup.

This does some small cleanup of a bunch of little things without any logic
changes.

BUG=239656
Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=270010

[bbudge, 2014-05-12 17:48:52]

lgtm

[teravest, 2014-05-12 17:49:44]

The CQ bit was checked by teravest@chromium.org

[commit-bot: I haz the power, 2014-05-12 17:50:12]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/teravest@chromium.org/270863006/40001

[commit-bot: I haz the power, 2014-05-12 23:24:26]

FYI, CQ is re-trying this CL (attempt #1).
Please consider checking whether the failures are real,
and report flakes to chrome-troopers@google.com.
The failing builders are:
  android_dbg_triggered_tests on tryserver.chromium
(http://build.chromium.org/p/tryserver.chromium/builders/android_dbg_triggered...)
  mac_chromium_rel on tryserver.chromium
(http://build.chromium.org/p/tryserver.chromium/builders/mac_chromium_rel/buil...)
  win_chromium_rel on tryserver.chromium
(http://build.chromium.org/p/tryserver.chromium/builders/win_chromium_rel/buil...)

[commit-bot: I haz the power, 2014-05-13 04:14:20]

Change committed as 270010