Re: [orion-dev] 0.4m1 -> integration build and back

[John J Barton <johnjbarton@xxxxxxxxxxxxxxx>]

Ok I was able to reproduce this problem by switching between two versions of Orion. I was able to verify that Control+Shift+R does *not* solve the problem, but Wrench > Tools > Clear browser cache since beginning of time does solve the problem.

Then I hunted down our Chrome cache expert. The problem has two parts. One is that Control+Shift+R does *not* force reload XHRs and two that XHRs are not revalidated. 

Bug 30862 - Dynamically inserted subresources aren't revalidated even when the containing document is reloaded
https://bugs.webkit.org/show_bug.cgi?id=30862

The only workarounds today seem to be :
  1) cache busting URLs: post pend a version number URLs so they mismatch when the version changes.
  2) make the cache time magically correct so we flush based on time.

jjb