Fix missing dependency of //extensions:extensions_renderer_resources.

extensions/BUILD.gn

 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import("//testing/test.gni")
 import("//tools/grit/grit_rule.gni")
 import("//tools/grit/repack.gni")
 
 assert(enable_extensions)
 
 group("extensions_resources") {
@@ skipping 36 matching lines @@
   grit_flags = [
     "-E",
     "mojom_root=" + rebase_path(root_gen_dir),
   ]
 
   deps = [
     "//chrome/browser/media/router:mojo_bindings__generator",
     "//device/serial:serial_mojo__generator",
     "//extensions/common:mojo__generator",
     "//extensions/common/api:mojom__generator",
+    "//mojo/common:common_custom_types__generator",
   ]
 }
 
 static_library("test_support") {
   testonly = true
   sources = [
     "browser/api/cast_channel/cast_test_util.cc",
     "browser/api/cast_channel/cast_test_util.h",
     "browser/api/dns/mock_host_resolver_creator.cc",
     "browser/api/dns/mock_host_resolver_creator.h",
@@ skipping 281 matching lines @@
     "//testing/gtest",
     "//third_party/hunspell",
     "//third_party/icu",
     "//third_party/libpng",
     "//third_party/zlib",
     "//ui/base:test_support",
     "//ui/resources:ui_test_pak",
     "//ui/web_dialogs:test_support",
   ]
 }