There is a Mac-only willCacheResponse notification that gets recorded by several of the layout tests when layoutTestController.dumpResourceLoadCallbacks(true) is called.  However, this notification which originates at the ResourceHandle level is currently #if PLATFORM(MAC).  I noticed that the tests which depend on this notification are currently skipped on platform/win.  For Chromium, we have simply rebaselined with the willCacheResponse events excluded.  Having a separate baseline is unfortunate and not running the tests on platform/win seems even worse.<div>
<br></div><div>I wonder if it wouldn&#39;t be better to exclude willCacheResponse by default, and then only enable it selectively for tests that are about testing it.  That way, we can un-skip the other tests that only fail on non-Mac as a side-effect of this notification not being supported.  We could also try to support willCacheResponse on all platforms, but that seems like a lot of work for little gain.  Afterall, it is a notification that WebKit doesn&#39;t itself care about.  It is just something provided to the embedder of the WebKit Framework on Mac.</div>
<div><br></div><div>I didn&#39;t see any bugs on file about this issue.</div><div><br></div><div>-Darin</div>