commit 5e5f948b6b363dbfc8c076d8ff0c6b8e9ea99958
author senorblanco <senorblanco@chromium.org> Tue Aug 26 12:27:12 2014 -0700
committer Commit bot <commit-bot@chromium.org> Tue Aug 26 12:27:12 2014 -0700
tree 1f3b8fdb8dc30a897119f3ce25e347cdaad94391
parent 21aed57023bad4b04076c59e37097c7563efc028

Reimplement deserialization of SkImageFilter's uniqueID.

9fa60d ("Simplify flattening to just write enough ... ") simplified just
a tad too much. In particular, it disabled deserialization of
SkImageFilter's uniqueID, which in turn caused the failure of
SkImageFilter's cache, which caused a large regression in Chrome's SVG
filter performance.

The medium-term fix is to switch to the new SkRecordDraw SkPicture
backend, which will make the unique IDs unnecessary.

This change is an "in case of emergecy" CL, in the event that there are
problems switching on the new backend in Chrome. For that reason, it's
minimalist: only the filters used by Chrome are modified, and whitespace
changes are kept to a minimum. In this way, it should be easy to revert
once the new backend goes in.

R=reed@google.com

Author: senorblanco@chromium.org

Review URL: https://codereview.chromium.org/503833002