Change infobar creation to use a public static Create() method on the infobar delegate classes.

chrome/browser/google/google_url_tracker_infobar_delegate.cc

Index: chrome/browser/google/google_url_tracker_infobar_delegate.cc
===================================================================
--- chrome/browser/google/google_url_tracker_infobar_delegate.cc	(revision 175396)
+++ chrome/browser/google/google_url_tracker_infobar_delegate.cc	(working copy)
@@ -16,14 +16,15 @@
 #include "ui/base/l10n/l10n_util.h"
 
 
-GoogleURLTrackerInfoBarDelegate::GoogleURLTrackerInfoBarDelegate(
+// static
+GoogleURLTrackerInfoBarDelegate* GoogleURLTrackerInfoBarDelegate::Create(
     InfoBarService* infobar_service,
     GoogleURLTracker* google_url_tracker,
-    const GURL& search_url)
-    : ConfirmInfoBarDelegate(infobar_service),
-      google_url_tracker_(google_url_tracker),
-      search_url_(search_url),
-      pending_id_(0) {
+    const GURL& search_url) {
+  return static_cast<GoogleURLTrackerInfoBarDelegate*>(
+      infobar_service->AddInfoBar(scoped_ptr<InfoBarDelegate>(
+          new GoogleURLTrackerInfoBarDelegate(
+              infobar_service, google_url_tracker, search_url))));
 }
 
 bool GoogleURLTrackerInfoBarDelegate::Accept() {
@@ -81,6 +82,16 @@
   owner()->RemoveInfoBar(this);
 }
 
+GoogleURLTrackerInfoBarDelegate::GoogleURLTrackerInfoBarDelegate(
+    InfoBarService* infobar_service,
+    GoogleURLTracker* google_url_tracker,
+    const GURL& search_url)
+    : ConfirmInfoBarDelegate(infobar_service),
+      google_url_tracker_(google_url_tracker),
+      search_url_(search_url),
+      pending_id_(0) {
+}
+
 GoogleURLTrackerInfoBarDelegate::~GoogleURLTrackerInfoBarDelegate() {
 }