Use a const_iterator in structsHeader(). This was breaking the build for some compilers (GCC on android). Change-Id: Ibfe5603710961497b6c15aa2d9cb568096ca1dd4 Reviewed-on: https://chromium-review.googlesource.com/204897 Tested-by: Jamie Madill <jmadill@chromium.org> Reviewed-by: Shannon Woods <shannonwoods@chromium.org> Reviewed-by: Jamie Madill <jmadill@chromium.org>