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This CL replaces some foo() and hasFoo() with fooNonNull() and
hasFooNonNull(), where it will be compile failure on IDL compiler
migration.


Bug: 839389
Change-Id: I4b51fe335af0c2555c702b03f0609d71d231b296
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2213655
Auto-Submit: Hitoshi Yoshida <peria@chromium.org>
Reviewed-by: Kentaro Hara <haraken@chromium.org>
Reviewed-by: Yuki Shiino <yukishiino@chromium.org>
Commit-Queue: Hitoshi Yoshida <peria@chromium.org>
Cr-Commit-Position: refs/heads/master@{#772450}