Replace Outline#setConvexPath with Outline#setPath

Bug: 148544953
Test: No change in behavior, no new tests

setConvexPath no longer requires that the Path be Convex, so deprecate
the method and replace it with a name that does not imply it must be
Convex.

Update internal references to the Path being Convex as well.

Change-Id: I8935dc8ac7f7fb7db0d667e35fda67afdf2e6ac8