Including this header in production code introduces static initializers, which is disallowed in Chromium. BUG=chromium:559766 TESTED=git cl try -c --bot=android_compile_rel --bot=linux_compile_rel --bot=win_compile_rel --bot=mac_compile_rel --bot=ios_rel --bot=linux_gn_rel --bot=win_x64_gn_rel --bot=mac_x64_gn_rel --bot=android_gn_rel -m tryserver.webrtc R=henrika@webrtc.org Review URL: https://codereview.webrtc.org/1468923002 . Cr-Commit-Position: refs/heads/master@{#10746}