Revert r169382 now that android:40302 is fixed.
Thin archives are once again ok for android static_library builds.

(related, the webrtc build no longer uses the ndk-build system)

BUG=https://code.google.com/p/webrtc/issues/detail?id=950

Review URL: https://codereview.chromium.org/118873002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@241812 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 241812