Change function signature of SkPDFObject::emitObject.

Replace virutal SkPDFObject::emitObject(s, c, true) with non-virtual
SkPDFObject::emitIndirectObject(s, c), since none of the subclasses do
(or should do) anything different.

Replace object->emitObject(s, c, false) with object->emitObject(s, c)

This is one step in simplifying the SkPDFObject interface to allow for
the next step in refactoring.

Review URL: https://codereview.chromium.org/827733004
11 files changed