Limit ARM instruction "strheq" to Apple's clang compiler only. bug = Review URL: https://webrtc-codereview.appspot.com/1111008
Limit ARM instruction "strheq" to Apple's clang compiler only.
bug =
Review URL: https://webrtc-codereview.appspot.com/1111008

Cr-Mirrored-From: https://chromium.googlesource.com/external/webrtc
Cr-Mirrored-Commit: a0936a6e455b4b21c5ff763aac84db8fc74057ff

sippet/webrtc,sippet/webrtc,sippet/webrtc,sippet/webrtc,sippet/webrtc,sippet/webrtc