Chromium no longer needs the SkPicture default constructor

With the landing of the Chromium CL (Remove use of default SkPicture constructor - https://codereview.chromium.org/387343003/) Chromium should no longer require the SK_SUPPORT_LEGACY_DEFAULT_PICTURE_CTOR flag.

R=halcanary@google.com

Author: robertphillips@google.com

Review URL: https://codereview.chromium.org/398463002
1 file changed