Extract a base class from CommandLinePrefStore

chrome/browser/prefs/chrome_command_line_pref_store.h

Index: chrome/browser/prefs/chrome_command_line_pref_store.h
diff --git a/chrome/browser/prefs/chrome_command_line_pref_store.h b/chrome/browser/prefs/chrome_command_line_pref_store.h
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index 0000000000000000000000000000000000000000..a37280f137deb196b55f3cc8fa32c1c98fc1b5b9
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+++ b/chrome/browser/prefs/chrome_command_line_pref_store.h
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+// Copyright (c) 2016 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_PREFS_CHROME_COMMAND_LINE_PREF_STORE_H_
+#define CHROME_BROWSER_PREFS_CHROME_COMMAND_LINE_PREF_STORE_H_
+
+#include "base/command_line.h"
+#include "base/macros.h"
+#include "base/values.h"
+#include "components/prefs/command_line_pref_store.h"
+
+// This PrefStore keeps track of preferences set by command-line switches,
+// such as proxy settings.
+class ChromeCommandLinePrefStore : public CommandLinePrefStore {
+ public:
+  explicit ChromeCommandLinePrefStore(const base::CommandLine* command_line);
+
+ protected:
+  ~ChromeCommandLinePrefStore() override;
+
+  // Logs a message and returns false if the proxy switches are
+  // self-contradictory. Protected so it can be used in unit testing.
+  // TODO(bauerb): make this method public and remove the subclass, which calls
+  // this method, from the test.
+  bool ValidateProxySwitches();
+
+ private:
+  friend class TestCommandLinePrefStore;
+
+  // Using the string and boolean maps, apply command-line switches to their
+  // corresponding preferences in this pref store.
+  void ApplySimpleSwitches();
+
+  // Determines the proxy mode preference from the given proxy switches.
+  void ApplyProxyMode();
+
+  // Apply the SSL/TLS preferences from the given switches.
+  void ApplySSLSwitches();
+
+  // Determines whether the background mode is force-disabled.
+  void ApplyBackgroundModeSwitches();
+
+  // Mappings of command line switches to prefs.
+  static const BooleanSwitchToPreferenceMapEntry boolean_switch_map_[];
+  static const SwitchToPreferenceMapEntry string_switch_map_[];
+  static const SwitchToPreferenceMapEntry path_switch_map_[];
+  static const SwitchToPreferenceMapEntry integer_switch_map_[];
+
+  DISALLOW_COPY_AND_ASSIGN(ChromeCommandLinePrefStore);
+};
+
+#endif  // CHROME_BROWSER_PREFS_CHROME_COMMAND_LINE_PREF_STORE_H_