Pepper: Manifest refactoring in trusted plugin.

Pepper: Manifest refactoring in trusted plugin.

This lifts more manifest processing code out of the trusted plugin.
Specifically, instead of the trusted plugin receiving a PP_Var with the contents
of the manifest and making another method to create the manifest id, the
trusted plugin now simply receives the manifest ID directly.

BUG=239656
Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=271719

[teravest, 2014-05-19 18:17:28]

Mind taking a look at this?

[dmichael (off chromium), 2014-05-19 19:38:14]

lgtm

[teravest, 2014-05-19 19:49:55]

The CQ bit was checked by teravest@chromium.org

[commit-bot: I haz the power, 2014-05-19 19:50:03]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/teravest@chromium.org/287153006/90001

[commit-bot: I haz the power, 2014-05-19 21:02:05]

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:
  win_chromium_rel on tryserver.chromium
(http://build.chromium.org/p/tryserver.chromium/builders/win_chromium_rel/buil...)

[commit-bot: I haz the power, 2014-05-20 03:46:55]

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

[commit-bot: I haz the power, 2014-05-20 03:46:55]

Try jobs failed on following builders:
  win_chromium_rel on tryserver.chromium
(http://build.chromium.org/p/tryserver.chromium/builders/win_chromium_rel/buil...)

[teravest, 2014-05-20 14:10:36]

The CQ bit was checked by teravest@chromium.org

[commit-bot: I haz the power, 2014-05-20 14:10:50]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/teravest@chromium.org/287153006/90001

[commit-bot: I haz the power, 2014-05-20 18:44:16]

Change committed as 271719