Turn the utility process image decoder into a Mojo service.

components/BUILD.gn

 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//testing/test.gni")
 import("//tools/grit/repack.gni")
 
 # Collection of all components. You wouldn't link to this, but this is rather
@@ skipping 303 matching lines @@
     #deps += [ "//components/constrained_window:unit_tests" ]
   }
   if (is_win) {
     deps += [ "//components/browser_watcher:unit_tests" ]
   }
   if (is_ios) {
     deps -= [ "//components/devtools_http_handler:unit_tests" ]
   }
 
   if (!is_ios) {
-    deps += [ "//components/scheduler:unit_tests" ]
+    deps += [
+      "//components/image_decoder:unit_tests",
+      "//components/scheduler:unit_tests",
+    ]
   }
 }
 
 repack("components_tests_pak") {
   sources = [
     "$root_gen_dir/components/components_resources.pak",
     "$root_gen_dir/components/strings/components_strings_en-US.pak",
     "$root_gen_dir/ui/resources/ui_resources_100_percent.pak",
     "$root_gen_dir/ui/resources/webui_resources.pak",
     "$root_gen_dir/ui/strings/app_locale_settings_en-US.pak",
@@ skipping 92 matching lines @@
 
   deps = [
     "//base",
     "//base/test:test_support_perf",
     "//testing/gtest",
     "//testing/perf",
     "//content/test:test_support",
     "//components/visitedlink/browser",
   ]
 }