Convert JsFindinpageManager to new JSONReader API

Update the implementation of JsFindinpageManager to use
JSONReader::Read instead of JSONReader::ReadDeprecated.

Bug: 925165
Change-Id: I3a36d9876e5a0e47975efc39b415c813601b5e60
Reviewed-on: https://chromium-review.googlesource.com/c/1477228
Reviewed-by: Lei Zhang <thestig@chromium.org>
Reviewed-by: Yi Su <mrsuyi@chromium.org>
Commit-Queue: Yi Su <mrsuyi@chromium.org>
Auto-Submit: Sylvain Defresne <sdefresne@chromium.org>
Cr-Commit-Position: refs/heads/master@{#634303}
1 file changed