Implement GetDefaultCharSet for Pepper and pull the corresponding PPAPI change.

BUG=52865
TEST=none
Review URL: http://codereview.chromium.org/3432021

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@60292 0039d316-1c4b-4281-b951-d872f2087c98
5 files changed