Remove SkPicture::kUsePathBoundsForClip_RecordingFlag

The real question is whether we ever want to record a picture without using the path bounds for a conservative (but faster) clip answer?

R=reed@google.com, mtklein@google.com, djsollen@google.com, scroggo@google.com

Author: robertphillips@google.com

Review URL: https://codereview.chromium.org/316143003
11 files changed