Remove use of kUsePathBoundsForClip_RecordingFlag

The behavior once invoked by the SkPicture::kUsePathBoundsForClip_RecordingFlag is now the default so this flag is going away.
Skia 9f1c241e (Remove SkPicture::kUsePathBoundsForClip_RecordingFlag - https://codereview.chromium.org/316143003/)

Review URL: https://codereview.chromium.org/326953002

git-svn-id: svn://svn.chromium.org/blink/trunk@176040 bbb929c8-8fbe-4397-9dbb-9b2b20218538