Unreviewed, rolling out r166434.

Unreviewed, rolling out r166434.
https://bugs.webkit.org/show_bug.cgi?id=130938

Caused crashes and other failures on cache tests (Requested by
ap on #webkit).

Reverted changeset:

Source/WebCore:

"Web Replay: add page-level setting to bypass the MemoryCache"
https://bugs.webkit.org/show_bug.cgi?id=130728
http://trac.webkit.org/changeset/166434

Source/WebKit2:

"Web Replay: add page-level setting to bypass the MemoryCache"
https://bugs.webkit.org/show_bug.cgi?id=130728
http://trac.webkit.org/changeset/166434

LayoutTests:

"Web Replay: add page-level setting to bypass the MemoryCache"
https://bugs.webkit.org/show_bug.cgi?id=130728
http://trac.webkit.org/changeset/166434

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@166459 268f45cc-cd09-0410-ab3c-d52691b4dbfc