libweave: Improve VLOG(1) for cloud request

Cloud request/responses were already logged in buffet when log level
1 was set. However it is still difficult to track request-response
pairs when OAuth2 requests were made when refreshing access tokens.

Made sure we log the request ID of refresh access token and also when
we receive success/error response, log the matching request ID to
match it with the corresponding request.

BUG=None
TEST=`FEATURES=test emerge-link libchromeos`

Change-Id: Icaad22b4b37adf85cbe937e5b4d5adc58d56706a
Reviewed-on: https://chromium-review.googlesource.com/285745
Trybot-Ready: Alex Vakulenko <avakulenko@chromium.org>
Tested-by: Alex Vakulenko <avakulenko@chromium.org>
Reviewed-by: Vitaly Buka <vitalybuka@chromium.org>
Commit-Queue: Vitaly Buka <vitalybuka@chromium.org>
1 file changed
tree: 3d5641ebdd975e91aa360986ff9e65d8684f2671
  1. buffet/
  2. libweave/