Implemented ForceMaximizeBrowserWindowOnFirstRun policy, added unit test and browser test.

chrome/browser/chromeos/policy/login_policy_test_base.h

Index: chrome/browser/chromeos/policy/login_policy_test_base.h
diff --git a/chrome/browser/chromeos/policy/login_policy_test_base.h b/chrome/browser/chromeos/policy/login_policy_test_base.h
new file mode 100644
index 0000000000000000000000000000000000000000..3ed28e4716c1bda3e26c8d4cea8ea3232d5f1b46
--- /dev/null
+++ b/chrome/browser/chromeos/policy/login_policy_test_base.h
@@ -0,0 +1,55 @@
+// Copyright 2014 The Chromium Authors. All rights reserved.

[bartfab (slow), 2015/04/01 14:22:42]

Nit: s/2014/2015/

[peletskyi, 2015/04/01 18:55:47]

Done.

+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef CHROME_BROWSER_CHROMEOS_POLICY_LOGIN_POLICY_TEST_BASE_H_
+#define CHROME_BROWSER_CHROMEOS_POLICY_LOGIN_POLICY_TEST_BASE_H_
+
+#include <string>

[bartfab (slow), 2015/04/01 14:22:43]

Nit: Add blank line below.

[peletskyi, 2015/04/01 18:55:46]

Done.

+#include "base/files/scoped_temp_dir.h"
+#include "base/macros.h"
+#include "base/memory/scoped_ptr.h"
+#include "chrome/browser/chromeos/login/test/oobe_base_test.h"
+
+namespace base {
+class FilePath;
+}
+
+namespace policy {
+
+class LocalPolicyTestServer;
+
+// This class can be used for the tests when policy needs to be set prior login.

[bartfab (slow), 2015/04/01 14:22:43]

Nit: How about: "This class can be used to implement tests which need policy to
be set prior to login."

[peletskyi, 2015/04/01 18:55:46]

Done.

+class LoginPolicyTestBase : public chromeos::OobeBaseTest {
+ protected:
+  LoginPolicyTestBase();
+  ~LoginPolicyTestBase() override;
+
+  // chromeos::OobeBaseTest::
+  void SetUp() override;
+  void SetUpCommandLine(base::CommandLine* command_line) override;
+  void SetUpOnMainThread() override;
+
+  virtual std::string GetMandatoryPolicies() const;

[bartfab (slow), 2015/04/01 14:22:43]

Rather than expecting tests to manually construct JSON entries, please have
these methods fill in a base::DictionaryValue instead. You can then add these
dictionaries to an overall dictionary which holds all policy and finally
serialize the whole thing.

[bartfab (slow), 2015/04/02 08:44:28]

I still think it is the right thing to do this.

[peletskyi, 2015/04/02 12:53:29]

Done.

+  virtual std::string GetRecommendedPolicies() const;
+
+  void SkipToLoginScreen();
+  void LogIn(const std::string& user_id, const std::string& password);
+
+  static const char kAccountPassword[];
+  static const char kAccountId[];
+
+ private:
+  void SetUpGaiaServerWithAccessTokens();
+  void SetMergeSessionParams(const std::string& email);
+  void SetServerPolicy();
+  base::FilePath PolicyFilePath() const;

[bartfab (slow), 2015/04/01 14:22:43]

Nit: When declaring a member of this type (not a pointer or reference), a
forward-declaration is not sufficient.

[peletskyi, 2015/04/01 18:55:46]

Following styleguide we should use like forward declaration
https://www.chromium.org/developers/coding-style/cpp-dos-and-donts

[bartfab (slow), 2015/04/02 08:44:28]

Nice catch. I was not aware that for return types, forward declarations are
sufficient. LGTM.

+
+  scoped_ptr<LocalPolicyTestServer> test_server_;
+  base::ScopedTempDir temp_dir_;
+
+  DISALLOW_COPY_AND_ASSIGN(LoginPolicyTestBase);
+};
+
+}  // namespace policy
+#endif  // CHROME_BROWSER_CHROMEOS_POLICY_LOGIN_POLICY_TEST_BASE_H_

[bartfab (slow), 2015/04/01 14:22:43]

Nit: Add a blank line above.

[peletskyi, 2015/04/01 18:55:46]

Done.