dan sinclair b4fee2f824 Update builtin methods.
This CL removes the import mechanism, the identifier paths and updates
all of the standard library methods to be builtins.

Bug: tint:242
Change-Id: If09b98a155ae49ced3986ba2c9b517a060693006
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/28720
Commit-Queue: dan sinclair <dsinclair@chromium.org>
Reviewed-by: Ryan Harrison <rharrison@chromium.org>
2020-09-22 19:42:13 +00:00
..
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