Implement a policy to autologin a public account.

chrome/browser/chromeos/login/mock_login_display_host.h

Index: chrome/browser/chromeos/login/mock_login_display_host.h
diff --git a/chrome/browser/chromeos/login/mock_login_display_host.h b/chrome/browser/chromeos/login/mock_login_display_host.h
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index 0000000000000000000000000000000000000000..5bc740b026562b0e6103e08fd0a5ae73cd9d3419
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+++ b/chrome/browser/chromeos/login/mock_login_display_host.h
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+// Copyright 2013 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_CHROMEOS_LOGIN_MOCK_LOGIN_DISPLAY_HOST_H_
+#define CHROME_BROWSER_CHROMEOS_LOGIN_MOCK_LOGIN_DISPLAY_HOST_H_
+
+#include "base/basictypes.h"
+#include "chrome/browser/chromeos/login/login_display_host.h"
+#include "testing/gmock/include/gmock/gmock.h"
+
+namespace chromeos {
+
+class MockLoginDisplayHost : public LoginDisplayHost {
+ public:
+  MockLoginDisplayHost();
+  virtual ~MockLoginDisplayHost();
+
+  MOCK_METHOD1(CreateLoginDisplay, LoginDisplay*(LoginDisplay::Delegate*));
+  MOCK_CONST_METHOD0(GetNativeWindow, gfx::NativeWindow(void));
+  MOCK_CONST_METHOD0(GetWidget, views::Widget*(void));
+  MOCK_METHOD0(BeforeSessionStart, void(void));
+  MOCK_METHOD0(OnSessionStart, void(void));
+  MOCK_METHOD0(OnCompleteLogin, void(void));
+  MOCK_METHOD0(OpenProxySettings, void(void));
+  MOCK_METHOD1(SetOobeProgressBarVisible, void(bool));
+  MOCK_METHOD1(SetShutdownButtonEnabled, void(bool));
+  MOCK_METHOD1(SetStatusAreaVisible, void(bool));
+  MOCK_METHOD0(ShowBackground, void(void));
+  MOCK_METHOD0(CheckForAutoEnrollment, void(void));
+  MOCK_METHOD2(StartWizard, void(const std::string&, DictionaryValue*));
+  MOCK_METHOD0(StartSignInScreen, void(void));
+  MOCK_METHOD0(ResumeSignInScreen, void(void));
+  MOCK_METHOD0(OnPreferencesChanged, void(void));
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(MockLoginDisplayHost);
+};
+
+}  // namespace chromeos
+
+#endif  // CHROME_BROWSER_CHROMEOS_LOGIN_MOCK_LOGIN_DISPLAY_HOST_H_