[COOP] Access reporting [13/N] Named getter.

Patch [3/N] modified blink windows's binding to call CheckCoopAccess()
whenever a "CrossOrigin" attribute/methods was accessed.

This adds the same check for the named getter.

COOP access reporting:
[ 1/N] https://chromium-review.googlesource.com/c/chromium/src/+/2264294
[ 2/N] https://chromium-review.googlesource.com/c/chromium/src/+/2270185
[ 3/N] https://chromium-review.googlesource.com/c/chromium/src/+/2270472
[ 4/N] https://chromium-review.googlesource.com/c/chromium/src/+/2273120
[ 5/N] https://chromium-review.googlesource.com/c/chromium/src/+/2309433
[ 6/N] https://chromium-review.googlesource.com/c/chromium/src/+/2308715
[ 7/N] https://chromium-review.googlesource.com/c/chromium/src/+/2309697
[ 8/N] https://chromium-review.googlesource.com/c/chromium/src/+/2275889
[ 9/N] https://chromium-review.googlesource.com/c/chromium/src/+/2310530
[10/N] https://chromium-review.googlesource.com/c/chromium/src/+/2315024
[11/N] https://chromium-review.googlesource.com/c/chromium/src/+/2323250
[12/N] https://chromium-review.googlesource.com/c/chromium/src/+/2339353
[13/N] this patch.

Bug: 1090273
Change-Id: I889031acfb0e925c8fa3cd0fd4c057c538d09332
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2346650Reviewed-by: Yuki Shiino <yukishiino@chromium.org>
Commit-Queue: Arthur Sonzogni <arthursonzogni@chromium.org>
Cr-Commit-Position: refs/heads/master@{#796796}

third_party/blink/renderer/bindings/core/v8/custom/v8_window_custom.cc

@@ -210,6 +210,7 @@ void V8Window::NamedPropertyGetterCustom(
   // https://html.spec.whatwg.org/C/#document-tree-child-browsing-context-name-property-set
   Frame* child = frame->Tree().ScopedChild(name);
   if (child) {
+    window->ReportCoopAccess(info.GetIsolate(), "named");
     UseCounter::Count(CurrentExecutionContext(info.GetIsolate()),
                       WebFeature::kNamedAccessOnWindow_ChildBrowsingContext);
 
@@ -270,6 +271,7 @@ void V8Window::NamedPropertyGetterCustom(
 
   if (!has_named_item && !has_id_item)
     return;
+  window->ReportCoopAccess(info.GetIsolate(), "named");
 
   if (!has_named_item && has_id_item &&
       !doc->ContainsMultipleElementsWithId(name)) {

third_party/blink/web_tests/external/wpt/html/cross-origin-opener-policy/reporting/access-reporting/property-named-getter.https-expected.txt

-This is a testharness.js-based test.
-FAIL same-site > w => w["iframeName"] assert_equals: expected 1 but got 0
-FAIL cross-origin > w => w["iframeName"] assert_equals: expected 1 but got 0
-FAIL same-site > w => w["divID"] assert_equals: expected 1 but got 0
-PASS cross-origin > w => w["divID"]
-PASS same-site > w => w["existingGlobal"]
-PASS cross-origin > w => w["existingGlobal"]
-PASS same-site > w => w["missingGlobal"]
-PASS cross-origin > w => w["missingGlobal"]
-Harness: the test ran to completion.
-