Test that disabling disk cache by setting the cache model works.

On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".


Default (cache enabled)
--------Testing loads from disk cache--------
response headers: {"Cache-control":"max-age=100"}
response source: Disk cache

--------Testing loads through memory cache (XHR behavior)--------
response headers: {"Cache-control":"max-age=100"}
response source: Memory cache

--------Testing loads through memory cache (subresource behavior)--------
response headers: {"Cache-control":"max-age=100"}
response source: Memory cache

Disabling cache
--------Testing loads from disk cache--------
response headers: {"Cache-control":"max-age=100"}
response source: Network

--------Testing loads through memory cache (XHR behavior)--------
response headers: {"Cache-control":"max-age=100"}
response source: Network

--------Testing loads through memory cache (subresource behavior)--------
response headers: {"Cache-control":"max-age=100"}
response source: Network

Re-enabling cache
--------Testing loads from disk cache--------
response headers: {"Cache-control":"max-age=100"}
response source: Disk cache

--------Testing loads through memory cache (XHR behavior)--------
response headers: {"Cache-control":"max-age=100"}
response source: Memory cache

--------Testing loads through memory cache (subresource behavior)--------
response headers: {"Cache-control":"max-age=100"}
response source: Memory cache

PASS successfullyParsed is true

TEST COMPLETE