Change function signature of SkPDFObject::emitObject.

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.

Committed: https://skia.googlesource.com/skia/+/4fc48af0d7bec93a911d32330f251386a8adec98

[hal.canary, 2015-01-12 17:49:18]

The CQ bit was checked by halcanary@google.com

[commit-bot: I haz the power, 2015-01-12 17:49:33]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/827733004/1

[commit-bot: I haz the power, 2015-01-12 17:49:34]

Note for Reviewers:
The CQ is waiting for an approval.
If you believe that the CL is not ready yet, or if you would like to L-G-T-M
with comments then please uncheck the CQ checkbox.

Waiting for LGTM from valid reviewer(s) till 2015-01-12 23:49 UTC

[hal.canary, 2015-01-12 17:49:41]

The CQ bit was unchecked by halcanary@google.com

[hal.canary, 2015-01-12 17:50:01]

halcanary@google.com changed reviewers:
+ djsollen@google.com

[hal.canary, 2015-01-12 17:50:02]

ptal

[djsollen, 2015-01-12 18:03:43]

lgtm

[hal.canary, 2015-01-12 18:06:43]

The CQ bit was checked by halcanary@google.com

[commit-bot: I haz the power, 2015-01-12 18:07:43]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/827733004/1

[commit-bot: I haz the power, 2015-01-12 18:07:54]

Committed patchset #1 (id:1) as
https://skia.googlesource.com/skia/+/4fc48af0d7bec93a911d32330f251386a8adec98