Tests that pages that use DeviceMotion are not put in the page cache.
On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
Main page opening resources/cached-page-1.html
resources/cached-page-1.html onload fired, count = 1
resources/cached-page-1.html about to navigate to resources/cached-page-2.html
resources/cached-page-2.html about to go back to resources/cached-page-1.html
resources/cached-page-1.html onload fired, count = 2
PASS successfullyParsed is true
TEST COMPLETE