LookupScope does not need to be in SkRemote.h

LookupScope does not need to be in SkRemote.h

It's only used by Cache and Client.
This moves it to SkRemote.cpp, where they live.

BUG=skia:

Committed: https://skia.googlesource.com/skia/+/56f152b53f911b578e305d3461fb001585984a67

[mtklein, 2015-10-16 22:15:41]

mtklein@google.com changed reviewers:
+ halcanary@google.com, mtklein@google.com

[mtklein, 2015-10-16 22:15:50]

The CQ bit was checked by mtklein@google.com

[commit-bot: I haz the power, 2015-10-16 22:15:55]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1409273002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1409273002/1

[commit-bot: I haz the power, 2015-10-16 22:15:56]

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 2015-10-17 04:15 UTC

[hal.canary, 2015-10-16 22:32:53]

lgtm

[commit-bot: I haz the power, 2015-10-16 22:33:20]

Committed patchset #1 (id:1) as
https://skia.googlesource.com/skia/+/56f152b53f911b578e305d3461fb001585984a67