Implement SecurityOrigin::IsPotentiallyTrustworthy with network::IsOriginPotentiallyTrustworthy

After previous refactoring, the body of
SecurityOrigin::IsPotentiallyTrustworthy is essentially equivalent to
network::IsOriginPotentiallyTrustworthy, except that it first DCHECKs
the protocol is not "data" and handles opaque origins specially. This
CL relies on network's method to implement SecurityOrigin's one in
order to reduce code duplication. There should be no visible behavior
change.

Bug: 1153336
Change-Id: Ib88bd716174d4ac68c50bcc99a82fd2e51303b93
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2615260Reviewed-by: Mike West <mkwst@chromium.org>
Commit-Queue: Frédéric Wang <fwang@igalia.com>
Cr-Commit-Position: refs/heads/master@{#844028}

third_party/blink/renderer/platform/weborigin/security_origin.cc

@@ -438,48 +438,9 @@ bool SecurityOrigin::IsPotentiallyTrustworthy() const {
   // //services/network/public/cpp/is_potentially_trustworthy.h).
 
   DCHECK_NE(protocol_, "data");
-
-  // The code below is based on the specification at
-  // https://w3c.github.io/webappsec-secure-contexts/#potentially-trustworthy-origin
-
-  // 1. If origin is an opaque origin, return "Not Trustworthy".
   if (IsOpaque())
     return is_opaque_origin_potentially_trustworthy_;
-
-  // 2. Assert: origin is a tuple origin.
-  DCHECK(!IsOpaque());
-
-  // 3. If origin’s scheme is either "https" or "wss", return "Potentially
-  //    Trustworthy".
-  // This is handled by the url::GetSecureSchemes() call below.
-
-  // 4. If origin’s host component matches one of the CIDR notations 127.0.0.0/8
-  //    or ::1/128 [RFC4632], return "Potentially Trustworthy".
-  // 5. If origin’s host component is "localhost" or falls within ".localhost",
-  //    and the user agent conforms to the name resolution rules in
-  //    [let-localhost-be-localhost], return "Potentially Trustworthy".
-  if (IsLocalhost())
-    return true;
-
-  // 6. If origin’s scheme component is file, return "Potentially Trustworthy".
-  // This is handled by the IsLocal() call below.
-
-  // 7. If origin’s scheme component is one which the user agent considers to be
-  //    authenticated, return "Potentially Trustworthy".
-  //    Note: See §7.1 Packaged Applications for detail here.
-  //
-  if (base::Contains(url::GetSecureSchemes(), protocol_.Ascii()) || IsLocal())
-    return true;
-
-  // 8. If origin has been configured as a trustworthy origin, return
-  //    "Potentially Trustworthy".
-  //    Note: See §7.2 Development Environments for detail here.
-  if (network::SecureOriginAllowlist::GetInstance().IsOriginAllowlisted(
-          ToUrlOrigin()))
-    return true;
-
-  // 9. Return "Not Trustworthy".
-  return false;
+  return network::IsOriginPotentiallyTrustworthy(ToUrlOrigin());
 }
 
 // static