Port identity_internals to mojo

chrome/browser/BUILD.gn

Index: chrome/browser/BUILD.gn
diff --git a/chrome/browser/BUILD.gn b/chrome/browser/BUILD.gn
index 42c994b8d59c83d1a1d706ce81ae8961be556304..8a7a6945f757854b7ea340b4331964f175af09bc 100644
--- a/chrome/browser/BUILD.gn
+++ b/chrome/browser/BUILD.gn
@@ -619,6 +619,7 @@ grit("resources") {
   ]
 
   omnibox_mojom_file = "$root_gen_dir/chrome/browser/ui/webui/omnibox/omnibox.mojom.js"
+  identity_internals_mojom_file = "$root_gen_dir/chrome/browser/ui/webui/identity_internals/identity_internals.mojom.js"
 
   grit_flags = [
     "-E", "about_credits_file=" +
@@ -627,12 +628,15 @@ grit("resources") {
           rebase_path(additional_modules_list_file, root_build_dir),
     "-E", "omnibox_mojom_file=" +
           rebase_path(omnibox_mojom_file, root_build_dir),
+    "-E", "identity_internals_mojom_file=" +
+          rebase_path(identity_internals_mojom_file, root_build_dir),
   ]
 
   deps = [
     ":about_credits",
     ":chrome_internal_resources_gen",
     "//chrome/browser/ui/webui/omnibox:mojo_bindings",
+    "//chrome/browser/ui/webui/identity_internals:mojo_bindings",
   ]
 }