refactor(extra-info): migrate to the new DI architecture

Bug: twpowertools:226
Change-Id: Icaf98068bf5a272bf00a2b6b71e7ee40e3845d76
diff --git a/src/features/extraInfo/presentation/scripts/ccExtraInfoStyles.script.ts b/src/features/extraInfo/presentation/scripts/ccExtraInfoStyles.script.ts
new file mode 100644
index 0000000..9395895
--- /dev/null
+++ b/src/features/extraInfo/presentation/scripts/ccExtraInfoStyles.script.ts
@@ -0,0 +1,13 @@
+import Script from '../../../../common/architecture/scripts/Script';
+import { injectStylesheet } from '../../../../common/contentScriptsUtils';
+
+export default class CCExtraInfoStylesScript extends Script {
+  page: never;
+  environment: never;
+  runPhase: never;
+
+  execute() {
+    injectStylesheet(chrome.runtime.getURL('css/extrainfo.css'));
+    injectStylesheet(chrome.runtime.getURL('css/extrainfo_perforumstats.css'));
+  }
+}