Remove dependency on base from drfuzz_main.cc.
Remove dependency on base from drfuzz_main.cc.

Permits building drfuzz_main.cc in webrtc infrastructure.

BUG=chromium:566930, webrtc:4771
R=aizatsky@chromium.org, zhaoqin@chromium.org

Review URL: https://codereview.chromium.org/1526093005

Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#365640}

axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk