This currently isn't possible as-is since webkitpy.common.net.web.Web only supports HTTP GET. We'd have to add HTTP POST and PUT support.

This is also in conflict with  bug 691653  for making WPT Sync its own library.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/fa791ce4bcf3885b3325406ccbbdc6e974d2357b

commit fa791ce4bcf3885b3325406ccbbdc6e974d2357b
Author: Jeff Carpenter <jeffcarp@chromium.org>
Date: Tue Mar 21 06:34:49 2017

[WPT Export] Fix logic error in WPTGitHub, move requests into common.net.web

I discovered a bug in WPTGitHub. The only way to add a test for it was to move the request logic into webkitpy.common.net.web.Web, conveniently killing two birds with one stone.

BUG= 677669 
R=qyearsley@chromium.org

Change-Id: I6eee236daff67c990348eb43be5f84d47c8dd8b7
Reviewed-on: https://chromium-review.googlesource.com/457198
Commit-Queue: Jeff Carpenter <jeffcarp@chromium.org>
Reviewed-by: Quinten Yearsley <qyearsley@chromium.org>
Cr-Commit-Position: refs/heads/master@{#458328}
[modify] https://crrev.com/fa791ce4bcf3885b3325406ccbbdc6e974d2357b/third_party/WebKit/Tools/Scripts/webkitpy/common/net/web.py
[modify] https://crrev.com/fa791ce4bcf3885b3325406ccbbdc6e974d2357b/third_party/WebKit/Tools/Scripts/webkitpy/common/net/web_mock.py
[modify] https://crrev.com/fa791ce4bcf3885b3325406ccbbdc6e974d2357b/third_party/WebKit/Tools/Scripts/webkitpy/w3c/wpt_github.py
[modify] https://crrev.com/fa791ce4bcf3885b3325406ccbbdc6e974d2357b/third_party/WebKit/Tools/Scripts/webkitpy/w3c/wpt_github_unittest.py
[modify] https://crrev.com/fa791ce4bcf3885b3325406ccbbdc6e974d2357b/third_party/WebKit/Tools/Scripts/wpt-export