Fix external/wpt/preload/prefetch-headers.https.html
prefetch-info.py takes the basename of the file parameter[1] to
construct the path of the resource to use. Adding green.png to the same
directory and removed the extra and unnecessary part of the file
parameter.
Bug: None
Change-Id: I62f3ab6d4e90c1ac0dbdbcd544625e7e3d443418
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5898200
Auto-Submit: Weizhong Xia weizhong@google.com
Bot-Commit: Rubber Stamper rubber-stamper@appspot.gserviceaccount.com
Commit-Queue: Rubber Stamper rubber-stamper@appspot.gserviceaccount.com
Cr-Commit-Position: refs/heads/main@{#1362439}