Prepare for removing superfluous toMessageElement function

Bug: chromium:1135143
Change-Id: I1646dd57e0a6255d6437a58645737f2a17c9e64a
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2461014
Commit-Queue: Sigurd Schneider <sigurds@chromium.org>
Reviewed-by: Peter Marshall <petermarshall@chromium.org>
Cr-Commit-Position: refs/heads/master@{#815528}

third_party/blink/web_tests/http/tests/devtools/console/console-big-array.js

@@ -68,7 +68,7 @@
 
   for (var i = 0; i < messages.length; ++i) {
     var consoleMessage = messages[i].consoleMessage();
-    var element = messages[i].toMessageElement();
+    var element = messages[i].element();
     var node = element.traverseNextNode(element);
 
     while (node) {

third_party/blink/web_tests/http/tests/devtools/console/console-filter-level-test.js

@@ -34,7 +34,7 @@
     for (var i = 0; i < messages.length; i++) {
       // Ordering is important here, as accessing the element the first time around
       // triggers live location creation and updates which we need to await properly.
-      const element = messages[i].toMessageElement();
+      const element = messages[i].element();
       await TestRunner.waitForPendingLiveLocationUpdates();
       TestRunner.addResult('>' + element.deepTextContent());
     }

third_party/blink/web_tests/http/tests/devtools/console/console-filter-test.js

@@ -70,7 +70,7 @@
 
       // Ordering is important here, as accessing the element the first time around
       // triggers live location creation and updates which we need to await properly.
-      const element = viewMessage.toMessageElement();
+      const element = viewMessage.element();
       await TestRunner.waitForPendingLiveLocationUpdates();
       TestRunner.addResult(indent + delimeter + element.deepTextContent());
     }

third_party/blink/web_tests/http/tests/devtools/console/console-linkify-message-location.js

@@ -56,7 +56,7 @@
     for (var i = 0; i < messages.length; ++i) {
       // Ordering is important here. Retrieveing the message element the first time triggers
       // live location creation and updates, which we need to await for correct locations.
-      var element = messages[i].toMessageElement();
+      var element = messages[i].element();
       await TestRunner.waitForPendingLiveLocationUpdates();
       var anchor = element.querySelector('.console-message-anchor');
       TestRunner.addResult(anchor.textContent.replace(/VM\d+/g, 'VM'));