Make isAppProvidedWebUri false from setDefaultIntent()

Just assign mUri directly instead of calling setUri()
to avoid flipping mIsAppProvidedWebUri to true exactly
when it shouldn't be.

Also, make sure the boolean gets un/parceled.

Bug: 25952056

Change-Id: I973e585d04a73c2b7eab5975ea7f2b447b270c26