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This is a reland of 581b273e

Original change's description:
> [webnfc] Refactor/Refine impl for "Creating Web NFC message" algorithm
>
> This CL implements strictly the "Creating Web NFC message" algorithm
> described at http://w3c.github.io/web-nfc/#creating-web-nfc-message.
>
> 1.
> Changes the Web IDL definition for NDEFRecordData from
> "typedef (DOMString or unrestricted double or ArrayBuffer or Dictionary) NDEFRecordData;"
> to
> "typedef any NDEFRecordData;"
>
> 2.
> Adds verification of NDEFRecordInit when creating NDEFRecord, i.e. makes
> NDEFRecord ctor throw exceptions in case of invalid NDEFRecordInit.
> Also, the same thing for NDEFMessage and NFCReadingEvent.
>
> 3.
> Changes code flow for Step 10.9 of "9.10.1 The push() method" described
> at https://w3c.github.io/web-nfc/#the-push-method.
> "
> Let output be the notation for the NDEF message to be created by UA, as
> the result of passing message to create Web NFC message. If this throws
> an exception, reject p with that exception and abort these steps.
> "
> Previously,
>   NDEFMessageSource (NDEFMessageInit) -Validity check->
>   -Mojo TypeConverter-> Mojom NDEFMessagePtr
> Now,
>   Remove "Validity check" and "Mojo TypeConverter" mentioned above,
>   instead, we reuse the process of creating NDEFMessage from
>   NDEFMessageSource (NDEFMessageInit), then the next step converting
>   NDEFMessage to Mojom NDEFMessagePtr is quite an easy job.
>
> BUG=520391
>
> Change-Id: I628981e556f89ffdd0f883da0cfa99b20a6f8300
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1767719
> Commit-Queue: Leon Han <leon.han@intel.com>
> Reviewed-by: Daniel Cheng <dcheng@chromium.org>
> Reviewed-by: Reilly Grant <reillyg@chromium.org>
> Reviewed-by: Rijubrata Bhaumik <rijubrata.bhaumik@intel.com>
> Cr-Commit-Position: refs/heads/master@{#693539}

Bug: 520391,923974
TBR: dcheng@,reillyg@
Change-Id: I608e28638c0909c9d4f675774514cd990f9878c8
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1787557
Commit-Queue: Leon Han <leon.han@intel.com>
Reviewed-by: Kentaro Hara <haraken@chromium.org>
Cr-Commit-Position: refs/heads/master@{#693638}