Add support for providing an external file for extracting content.

ios/chrome/browser/dom_distiller/dom_distiller_service_factory.cc

Index: ios/chrome/browser/dom_distiller/dom_distiller_service_factory.cc
diff --git a/ios/chrome/browser/dom_distiller/dom_distiller_service_factory.cc b/ios/chrome/browser/dom_distiller/dom_distiller_service_factory.cc
index 0adbfa783f93f7b95517458dfd5e49621210be42..8b88d6f38dd557ca20402fe1cd8552d2a12981f5 100644
--- a/ios/chrome/browser/dom_distiller/dom_distiller_service_factory.cc
+++ b/ios/chrome/browser/dom_distiller/dom_distiller_service_factory.cc
@@ -17,10 +17,12 @@
 #include "components/keyed_service/ios/browser_state_dependency_manager.h"
 #include "components/leveldb_proto/proto_database.h"
 #include "components/leveldb_proto/proto_database_impl.h"
+#include "grit/components_resources.h"
 #include "ios/chrome/browser/browser_state/browser_state_otr_helper.h"
 #include "ios/public/provider/chrome/browser/browser_state/chrome_browser_state.h"
 #include "ios/web/public/browser_state.h"
 #include "ios/web/public/web_thread.h"
+#include "ui/base/resource/resource_bundle.h"
 
 namespace {
 // A simple wrapper for DomDistillerService to expose it as a
@@ -85,8 +87,12 @@ KeyedService* DomDistillerServiceFactory::BuildServiceInstanceFor(
   scoped_ptr<DomDistillerStore> dom_distiller_store(
       new DomDistillerStore(db.Pass(), database_dir));
 
+  const std::string distiller_js_script =
+      ResourceBundle::GetSharedInstance()
+          .GetRawDataResource(IDR_DISTILLER_JS)
+          .as_string();
   scoped_ptr<DistillerPageFactory> distiller_page_factory(
-      new DistillerPageFactoryIOS(browser_state));
+      new DistillerPageFactoryIOS(browser_state, distiller_js_script));
   scoped_ptr<DistillerURLFetcherFactory> distiller_url_fetcher_factory(
       new DistillerURLFetcherFactory(browser_state->GetRequestContext()));