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This patch moves the experiments settings from the user profile to the browser's local state, since these settings correspond to command line switches.
This is a release blocker for NaCl, so we decided to push this through.

TEST=manual
BUG= http://code.google.com/p/nativeclient/issues/detail?id=1322
Review URL: http://codereview.chromium.org/6267009

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@72225 0039d316-1c4b-4281-b951-d872f2087c98