bind-gen: Introduce a new SequenceNode

Introduces a new SequenceNode and replaces existing use cases of
SymbolScopeNode with the SequenceNode if appropriate.

The implementation of SequenceNode and SymbolScopeNode is
incomplete, and the follow-up patches will complete the two

Bug: 839389
Change-Id: I6d578ffe94c386757e76764a4d02221ef0847f51
Commit-Queue: Yuki Shiino <>
Reviewed-by: Hitoshi Yoshida <>
Cr-Commit-Position: refs/heads/master@{#720790}
4 files changed