Extract a base class from CommandLinePrefStore

chrome/browser/prefs/command_line_pref_store.h

Index: chrome/browser/prefs/command_line_pref_store.h
diff --git a/chrome/browser/prefs/command_line_pref_store.h b/chrome/browser/prefs/command_line_pref_store.h
deleted file mode 100644
index 735adb6f16cfab05d802fd279fa7ae87fd96e7e2..0000000000000000000000000000000000000000
--- a/chrome/browser/prefs/command_line_pref_store.h
+++ /dev/null
@@ -1,77 +0,0 @@
-// Copyright (c) 2012 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_COMMAND_LINE_PREF_STORE_H_
-#define CHROME_BROWSER_PREFS_COMMAND_LINE_PREF_STORE_H_
-
-#include "base/command_line.h"
-#include "base/macros.h"
-#include "base/values.h"
-#include "components/prefs/value_map_pref_store.h"
-
-// This PrefStore keeps track of preferences set by command-line switches,
-// such as proxy settings.
-class CommandLinePrefStore : public ValueMapPrefStore {
- public:
-  explicit CommandLinePrefStore(const base::CommandLine* command_line);
-
- protected:
-  ~CommandLinePrefStore() override;
-
-  // Logs a message and returns false if the proxy switches are
-  // self-contradictory. Protected so it can be used in unit testing.
-  bool ValidateProxySwitches();
-
- private:
-  friend class TestCommandLinePrefStore;
-
-  struct StringSwitchToPreferenceMapEntry {
-    const char* switch_name;
-    const char* preference_path;
-  };
-
-  struct PathSwitchToPreferenceMapEntry {
-    const char* switch_name;
-    const char* preference_path;
-  };
-
-  struct IntegerSwitchToPreferenceMapEntry {
-    const char* switch_name;
-    const char* preference_path;
-  };
-
-  // |set_value| indicates what the preference should be set to if the switch
-  // is present.
-  struct BooleanSwitchToPreferenceMapEntry {
-    const char* switch_name;
-    const char* preference_path;
-    bool set_value;
-  };
-
-  // 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();
-
-  // Weak reference.
-  const base::CommandLine* command_line_;
-
-  // Mappings of command line switches to prefs.
-  static const BooleanSwitchToPreferenceMapEntry boolean_switch_map_[];
-  static const StringSwitchToPreferenceMapEntry string_switch_map_[];
-  static const PathSwitchToPreferenceMapEntry path_switch_map_[];
-  static const IntegerSwitchToPreferenceMapEntry integer_switch_map_[];
-
-  DISALLOW_COPY_AND_ASSIGN(CommandLinePrefStore);
-};
-
-#endif  // CHROME_BROWSER_PREFS_COMMAND_LINE_PREF_STORE_H_