Enable Autocomplete feature for chromium webview

components/autofill/browser/autofill_manager.cc

Index: components/autofill/browser/autofill_manager.cc
diff --git a/components/autofill/browser/autofill_manager.cc b/components/autofill/browser/autofill_manager.cc
index e7b2171746ce9158104609e205bb0d90653e458a..fa39c045625ddc74f3889784226d8a24c9cced82 100644
--- a/components/autofill/browser/autofill_manager.cc
+++ b/components/autofill/browser/autofill_manager.cc
@@ -219,7 +219,7 @@ AutofillManager::AutofillManager(
       manager_delegate_(delegate),
       app_locale_(app_locale),
       personal_data_(delegate->GetPersonalDataManager()),
-      autocomplete_history_manager_(web_contents),
+      autocomplete_history_manager_(web_contents, delegate),
       autocheckout_manager_(this),
       metric_logger_(new AutofillMetrics),
       has_logged_autofill_enabled_(false),
@@ -329,7 +329,7 @@ bool AutofillManager::OnMessageReceived(const IPC::Message& message) {
 
 bool AutofillManager::OnFormSubmitted(const FormData& form,
                                       const TimeTicks& timestamp) {
-  // Let AutoComplete know as well.
+  // Let Autocomplete know as well.
   autocomplete_history_manager_.OnFormSubmitted(form);
 
   if (!IsAutofillEnabled())
@@ -864,7 +864,9 @@ std::string AutofillManager::GetAutocheckoutURLPrefix() const {
   autofill::autocheckout::WhitelistManager* whitelist_manager =
       manager_delegate_->GetAutocheckoutWhitelistManager();
 
-  return whitelist_manager->GetMatchedURLPrefix(web_contents()->GetURL());
+  return whitelist_manager ?
+      whitelist_manager->GetMatchedURLPrefix(web_contents()->GetURL()) :
+      std::string();
 }
 
 bool AutofillManager::IsAutofillEnabled() const {
@@ -989,7 +991,7 @@ AutofillManager::AutofillManager(content::WebContents* web_contents,
       manager_delegate_(delegate),
       app_locale_("en-US"),
       personal_data_(personal_data),
-      autocomplete_history_manager_(web_contents),
+      autocomplete_history_manager_(web_contents, delegate),
       autocheckout_manager_(this),
       metric_logger_(new AutofillMetrics),
       has_logged_autofill_enabled_(false),