WebUI: Move more files from chrome/browser/webui to chrome/browser/ui/webui.

I'm moving the files I have found with:
$ ls chrome/browser/webui | grep _ui

BUG=59946
TEST=trybots

Review URL: http://codereview.chromium.org/6599024

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@76183 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/chrome/browser/ui/webui/flags_ui.h b/chrome/browser/ui/webui/flags_ui.h
new file mode 100644
index 0000000..97c5fec6
--- /dev/null
+++ b/chrome/browser/ui/webui/flags_ui.h
@@ -0,0 +1,25 @@
+// 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.
+
+#ifndef CHROME_BROWSER_UI_WEBUI_FLAGS_UI_H_
+#define CHROME_BROWSER_UI_WEBUI_FLAGS_UI_H_
+#pragma once
+
+#include "content/browser/webui/web_ui.h"
+
+class PrefService;
+class RefCountedMemory;
+
+class FlagsUI : public WebUI {
+ public:
+  explicit FlagsUI(TabContents* contents);
+
+  static RefCountedMemory* GetFaviconResourceBytes();
+  static void RegisterPrefs(PrefService* prefs);
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(FlagsUI);
+};
+
+#endif  // CHROME_BROWSER_UI_WEBUI_FLAGS_UI_H_