Set the default state of the subresource integrity feature to off for the time being.
<rdar://problem/32122997>
Created attachment 311020 [details] Patch
Is something wrong with the implementation? If this is for branching reasons, I believe we these kind of changes (flipping features on and off) is usually done directly on the branch.
We won't land this in trunk. This will just be done on a per-branch basis.