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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}