Skip InitializeSandbox for out-of-sandbox plugins
Skip InitializeSandbox for out-of-sandbox plugins

On ChromeOS R20, the gtalk plugins failed to load after some changes to the
setup of seccomp filter sandbox. We now append the --no-sandbox flags for
PPAPI plugins that need to run out of the sandbox, so the PPAPI process does not
apply sandboxing.

BUG=chromium-os-partner:9390
TEST=Run gtalk video on ChromeOS


Review URL: http://codereview.chromium.org/10295002

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@134950 0039d316-1c4b-4281-b951-d872f2087c98

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