[Origin API] Drop string parsers beyond .from(...).

Earlier versions of this API parsed strings into `Origin` objects via
the constructor, `fromURL()` and `parse()`. We've since coalesced all of
these into `Origin.from(...)` after discussion in [1].

This CL removes these variants from our implementation, and adjusts
tests accordingly.

[1]: whatwg/html#11846

Bug: 434131026
Change-Id: I8be1e1a0923b2cd48dcc7a0f80358237ecc9b88c
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/7204253
Commit-Queue: Mike West <[email protected]>
Reviewed-by: Antonio Sartori <[email protected]>
Cr-Commit-Position: refs/heads/main@{#1550470}

Author: mikewest

html/browsers/origin/tentative/api/origin-comparison.any.js

@@ -1,8 +1,10 @@
 // META: title=`Origin` comparison
 
 test(t => {
-  const opaqueA = new Origin("null");
-  const opaqueB = new Origin("null");
+  const opaqueA = new Origin();
+  const opaqueB = new Origin();
+  assert_true(opaqueA.opaque);
+  assert_true(opaqueB.opaque);
 
   assert_true(opaqueA.isSameOrigin(opaqueA), "Opaque origin should be same-origin with itself.");
   assert_true(opaqueA.isSameSite(opaqueA), "Opaque origin should be same-site with itself.");
@@ -11,11 +13,11 @@ test(t => {
 }, "Comparison of opaque origins.");
 
 test(t => {
-  const a = new Origin("https://a.example");
-  const a_a = new Origin("https://a.a.example");
-  const b_a = new Origin("https://b.a.example");
-  const b = new Origin("https://b.example");
-  const b_b = new Origin("https://b.b.example");
+  const a = Origin.from("https://a.example");
+  const a_a = Origin.from("https://a.a.example");
+  const b_a = Origin.from("https://b.a.example");
+  const b = Origin.from("https://b.example");
+  const b_b = Origin.from("https://b.b.example");
 
   assert_true(a.isSameOrigin(a), "Origin should be same-origin with itself.");
   assert_false(a.isSameOrigin(a_a), "Origins with different subdomains should not be same-origin.");
@@ -37,8 +39,8 @@ test(t => {
 }, "Comparison of tuple origins.");
 
 test(t => {
-  const http = new Origin("http://a.example");
-  const https = new Origin("https://a.example");
+  const http = Origin.from("http://a.example");
+  const https = Origin.from("https://a.example");
 
   assert_false(http.isSameOrigin(https), "http is not same-site with https");
   assert_false(https.isSameOrigin(http), "https is not same-site with http");

html/browsers/origin/tentative/api/origin-fromURL.any.js

@@ -2,10 +2,8 @@
 [Exposed=*]
 interface Origin {
   constructor();
-  constructor(USVString serializedOrigin);
 
-  static Origin? parse(USVString serializedOrigin);
-  static Origin? fromURL(USVString serializedURL);
+  static Origin from(any value);
 
   readonly attribute boolean opaque;