Add LoggingRequestResponse to httputils.
Add LoggingRequestResponse to httputils.

Because sometimes you don't want gzip, for example, when proxying
requests back to the skia debugger.

BUG=skia:
R=rmistry

Review-Url: https://codereview.chromium.org/2036183002

google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot