linux: disable libcurl when in chromium
linux: disable libcurl when in chromium

Bug: crashpad:30
Change-Id: I12007417d27b482f70879d91743fddc06851140e
Reviewed-on: https://chromium-review.googlesource.com/986503
Reviewed-by: Mark Mentovai <f1b5a91d4d6ad523f2610114591c007e75d15084@chromium.org>

chromium/crashpad,chromium/crashpad,chromium/crashpad