Make Gerrit the default code review system for gyp
Make Gerrit the default code review system for gyp

BUG=682746

Change-Id: I9d51f0d5e7186e9aa5faf4ae2758e32ab5785a12
Reviewed-on: https://chromium-review.googlesource.com/431095
Reviewed-by: Dirk Pranke <6693ee08b084bb2ffa767f664c99b689395e0e4b@chromium.org>

turbulenz/gyp,adblockplus/gyp,bnoordhuis/gyp,turbulenz/gyp,turbulenz/gyp,adblockplus/gyp,msc-/gyp,Phuehvk/gyp,chromium/gyp,adblockplus/gyp,chromium/gyp,Phuehvk/gyp,adblockplus/gyp,turbulenz/gyp,msc-/gyp,bnoordhuis/gyp,msc-/gyp,bnoordhuis/gyp,chromium/gyp,bnoordhuis/gyp,adblockplus/gyp,Phuehvk/gyp,chromium/gyp,msc-/gyp,msc-/gyp,turbulenz/gyp,bnoordhuis/gyp,chromium/gyp,Phuehvk/gyp,Phuehvk/gyp