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This also removes one bit of magic to make it more obvious what on is going on during a sync, which should hopefully help. Components have to decide if they support being stateful or not. If they do, then they must implement syncFields() and have mutable fields; if they don't, then they must have final fields. This isn't particularly enforced, though. This also renames _willSync() to _retainStatefulNodeIfPossible(), for clarity, and fixes some minor style issues and one typo that was breaking the drawer. R=abarth@chromium.org Review URL: https://codereview.chromium.org/1174023003
This is a copy of the stocks app... with everything removed.
The goal is to eventually replace the stocks app with this one, by adding it back bit by bit as we port it to RenderNode.