Pepper: Move NexeLoadManager map inside that class.
This moves the management of the global NexeLoadManager map inside the
NexeLoadManager class. This makes it so that a NexeLoadManager can be looked up
from a PP_Instance from the TrustedPluginChannel class, which is needed as part
of reporting exit status over Chromium IPC.
The change for moving exit status reporting to Chromium IPC is
available for review at:
https://codereview.chromium.org/
484783002/
BUG=397161
R=dmichael@chromium.org
Review URL: https://codereview.chromium.org/
484303002
Cr-Commit-Position: refs/heads/master@{#291102}
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@291102 0039d316-1c4b-4281-b951-d872f2087c98