Use different cpufeatures library when building with chrome.

There are more than one target when building with chrome. They have different build setup.
This patch just puts content of build/android/cpufeatures.gypi inside system_wrappers.gyp.
In the future, if more modules will use cpufeatures lib, we can move the code into a gypi file.
Review URL: https://webrtc-codereview.appspot.com/939030

git-svn-id: http://webrtc.googlecode.com/svn/trunk/webrtc@3242 4adac7df-926f-26a2-2b94-8c16560cd09d
1 file changed