Move WebUIFactory to chrome/browser.

content/browser/content_browser_client.cc

Index: content/browser/content_browser_client.cc
diff --git a/content/browser/content_browser_client.cc b/content/browser/content_browser_client.cc
new file mode 100644
index 0000000000000000000000000000000000000000..b96b55e7e7999e97bf8585fe99822d390715aebf
--- /dev/null
+++ b/content/browser/content_browser_client.cc
@@ -0,0 +1,17 @@
+// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "content/browser/content_browser_client.h"
+
+#include "base/memory/singleton.h"
+#include "content/browser/webui/empty_web_ui_factory.h"
+
+namespace content {
+
+WebUIFactory* ContentBrowserClient::GetWebUIFactory() {
+  // Return an empty factory so callsites don't have to check for NULL.
+  return EmptyWebUIFactory::Get();
+}
+
+}  // namespace content