Fix to allow the proxy authentication dialog to appear when hosting gaia in webview.

chrome/browser/guest_view/web_view/chrome_web_view_guest_delegate.cc

Index: chrome/browser/guest_view/web_view/chrome_web_view_guest_delegate.cc
diff --git a/chrome/browser/guest_view/web_view/chrome_web_view_guest_delegate.cc b/chrome/browser/guest_view/web_view/chrome_web_view_guest_delegate.cc
index 7bcf360fb9bef5c60f70a964fd5829fd61d46178..e9177bce665ca7108f26f3246627335dceaa1bb2 100644
--- a/chrome/browser/guest_view/web_view/chrome_web_view_guest_delegate.cc
+++ b/chrome/browser/guest_view/web_view/chrome_web_view_guest_delegate.cc
@@ -7,10 +7,15 @@
 
 #include "chrome/browser/extensions/chrome_extension_web_contents_observer.h"
 #include "chrome/browser/favicon/favicon_helper.h"
+#include "chrome/browser/password_manager/chrome_password_manager_client.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/renderer_context_menu/render_view_context_menu.h"
+#include "chrome/browser/ui/autofill/chrome_autofill_client.h"
+#include "chrome/browser/ui/passwords/manage_passwords_ui_controller.h"
 #include "chrome/browser/ui/pdf/chrome_pdf_web_contents_helper_client.h"
+#include "chrome/browser/ui/tab_dialogs.h"
 #include "chrome/common/chrome_version_info.h"
+#include "components/autofill/core/browser/autofill_manager.h"
 #include "components/browsing_data/storage_partition_http_cache_data_remover.h"
 #include "components/pdf/browser/pdf_web_contents_helper.h"
 #include "components/renderer_context_menu/context_menu_delegate.h"
@@ -102,6 +107,18 @@ void ChromeWebViewGuestDelegate::OnAttachWebViewHelpers(
       contents,
       scoped_ptr<pdf::PDFWebContentsHelperClient>(
           new ChromePDFWebContentsHelperClient()));
+
+  // Autofill is currently only enabled for webview in WebUI.
+  if (!web_view_guest_->owner_web_contents()->GetWebUI())

[Fady Samuel, 2015/04/23 03:03:29]

I just realized this isn't a good way to determine you're in WebUI. This is not
nullptr in Chrome Apps too. See IsOwnedByExtension in this file:

https://codereview.chromium.org/1066563006/patch/120001/130016

[paulmeyer, 2015/04/23 23:35:27]

Okay, after talking to vabr@, I'm going to restrict these changes to just the
ChromeOS OOBE login case.

+    return;
+
+  autofill::ChromeAutofillClient::CreateForWebContents(contents);
+  autofill::ChromeAutofillClient* auto_fill_client =
+      autofill::ChromeAutofillClient::FromWebContents(contents);
+  ChromePasswordManagerClient::CreateForWebContentsWithAutofillClient(
+      contents, auto_fill_client);
+  ManagePasswordsUIController::CreateForWebContents(contents);
+  TabDialogs::CreateForWebContents(contents);
 }
 
 void ChromeWebViewGuestDelegate::OnDidCommitProvisionalLoadForFrame(