mojo: explore-sites-internals: Use new bindings names in discards

Mojo JS Lite Bindings were recently renamed to align with the new C++
names. This CL changes usage of the old names with the new ones. See
bug for more details.

Bug: 968369
Change-Id: I363473451e610c62c2758f6477a51fddeea50929
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1714195Reviewed-by: Cathy Li <chili@chromium.org>
Commit-Queue: Giovanni Ortuño Urquidi <ortuno@chromium.org>
Cr-Commit-Position: refs/heads/master@{#680264}

chrome/browser/resources/explore_sites_internals/explore_sites_internals.js

@@ -84,7 +84,7 @@ function forceNetworkRequest() {
 
 document.addEventListener('DOMContentLoaded', function() {
   // Setup backend mojo.
-  pageHandler = exploreSitesInternals.mojom.PageHandler.getProxy();
+  pageHandler = exploreSitesInternals.mojom.PageHandler.getRemote();
   updatePageWithProperties();
 
   // Set up event listeners.

chrome/browser/ui/webui/explore_sites_internals/BUILD.gn

@@ -8,7 +8,4 @@ mojom("mojo_bindings") {
   sources = [
     "explore_sites_internals.mojom",
   ]
-
-  # TODO(https://crbug.com/968369): Change to use new names.
-  use_old_js_lite_bindings_names = true
 }