* Added aec_core_internal.h for private variables. * Moved aec_t struct to aec_core_internal.h * Name change aec_t -> AecCore * Moved additional declarations to aec_core_internal.h * Tested with audioproc_unittest and trybots TEST=none BUG=none Review URL: https://webrtc-codereview.appspot.com/1117004 git-svn-id: http://webrtc.googlecode.com/svn/trunk@3553 4adac7df-926f-26a2-2b94-8c16560cd09d