Remove "2" suffixes from options2 code.

chrome/browser/ui/webui/options2/chromeos/proxy_handler.h

Index: chrome/browser/ui/webui/options2/chromeos/proxy_handler.h
diff --git a/chrome/browser/ui/webui/options2/chromeos/proxy_handler2.h b/chrome/browser/ui/webui/options2/chromeos/proxy_handler.h
similarity index 78%
rename from chrome/browser/ui/webui/options2/chromeos/proxy_handler2.h
rename to chrome/browser/ui/webui/options2/chromeos/proxy_handler.h
index ad7188771c41321afc1af20f08b716e829c5c651..87bfa1c22082bd40af3b3351e39dfe6770fd18de 100644
--- a/chrome/browser/ui/webui/options2/chromeos/proxy_handler2.h
+++ b/chrome/browser/ui/webui/options2/chromeos/proxy_handler.h
@@ -2,11 +2,11 @@
 // 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_OPTIONS2_CHROMEOS_PROXY_HANDLER2_H_
-#define CHROME_BROWSER_UI_WEBUI_OPTIONS2_CHROMEOS_PROXY_HANDLER2_H_
+#ifndef CHROME_BROWSER_UI_WEBUI_OPTIONS2_CHROMEOS_PROXY_HANDLER_H_
+#define CHROME_BROWSER_UI_WEBUI_OPTIONS2_CHROMEOS_PROXY_HANDLER_H_
 
 #include "base/compiler_specific.h"
-#include "chrome/browser/ui/webui/options2/options_ui2.h"
+#include "chrome/browser/ui/webui/options2/options_ui.h"
 
 namespace chromeos {
 namespace options2 {
@@ -29,4 +29,4 @@ class ProxyHandler : public ::options2::OptionsPageUIHandler {
 }  // namespace options2
 }  // namespace chromeos
 
-#endif  // CHROME_BROWSER_UI_WEBUI_OPTIONS2_CHROMEOS_PROXY_HANDLER2_H_
+#endif  // CHROME_BROWSER_UI_WEBUI_OPTIONS2_CHROMEOS_PROXY_HANDLER_H_