[iOS][web] Use common IsURLTrustworthy implementation

This CL uses the common implementation in /service to know if a URL
should be considered as secure or not, instead of having a custom
implementation for iOS.
It allows to manage the blob: scheme and reduces the code duplication.

This is doing a forward call instead of changing the call sites to
make sure that the test are passing. The call sites will be updated
later.

Previously trustworthy, now treated as not trustworthy:
- data scheme URLs (explicitly rejected by IsOriginPotentiallyTrustworthy's opaqueness checks + explicitly rejected by IsUrlPotentiallyTrustworthy).

Previously inner origin not extracted, now correct behavior:
- blob: URLs (because network::IsUrlPotentiallyTrustworthy calls url::Origin::Create)

Previously not trustworthy, now treated as trustworthy:
- file scheme (explicitly covered by network::IsOriginPotentiallyTrustworthy, but not by the old SchemeRegistry::secure_schemes)

No change in behavior:
- about scheme (covered by old SchemeRegistry::secure_schemes and explicitly handled by new network::IsUrlPotentiallyTrustworthy)
- https, wss scheme (covered both by old SchemeRegistry::secure_schemes and new GURL::SchemeIsCryptographic)
- quic (covered by old SchemeRegistry::secure_schemes and new url::GetSecureSchemes check from IsOriginPotentiallyTrustworthy)
- net::IsLocalhost called in the old and new code path

Bug: 939077
Change-Id: Ic2f12f9c64e845f78c26bc764f900e0e1108953c
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1982540Reviewed-by: Eugene But <eugenebut@chromium.org>
Reviewed-by: Łukasz Anforowicz <lukasza@chromium.org>
Commit-Queue: Gauthier Ambard <gambard@chromium.org>
Cr-Commit-Position: refs/heads/master@{#728160}

ios/web/common/BUILD.gn

@@ -23,6 +23,7 @@ source_set("common") {
     "//base",
     "//ios/web/public/navigation",
     "//net",
+    "//services/network/public/cpp",
     "//url",
   ]
 

ios/web/common/origin_util.mm

@@ -6,6 +6,7 @@
 
 #include "base/stl_util.h"
 #include "net/base/url_util.h"
+#include "services/network/public/cpp/is_potentially_trustworthy.h"
 #include "url/gurl.h"
 #include "url/url_util.h"
 
@@ -16,25 +17,7 @@
 namespace web {
 
 bool IsOriginSecure(const GURL& url) {
-  if (url.SchemeIsCryptographic() || url.SchemeIsFile())
-    return true;
-
-  // TODO(crbug.com/939077): Also consider inner origins of blob: URLs
-  // (ideally, by deleting this function altogether and instead reusing
-  // //services/network/public/cpp/is_potentially_trustworthy.h (possibly after
-  // moving it to a location that can be consumed by //ios).
-  if (url.SchemeIsFileSystem() && url.inner_url() &&
-      IsOriginSecure(*url.inner_url())) {
-    return true;
-  }
-
-  if (base::Contains(url::GetSecureSchemes(), url.scheme()))
-    return true;
-
-  if (net::IsLocalhost(url))
-    return true;
-
-  return false;
+  return network::IsUrlPotentiallyTrustworthy(url);
 }
 
 }  // namespace web