Extract a base class from CommandLinePrefStore

components/prefs/command_line_pref_store.cc

+// Copyright 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.
+
+#include "components/prefs/command_line_pref_store.h"
+
+#include <string>
+
+#include "base/files/file_path.h"
+#include "base/memory/ptr_util.h"
+#include "base/strings/string_number_conversions.h"
+
+CommandLinePrefStore::CommandLinePrefStore(
+    const base::CommandLine* command_line)
+    : command_line_(command_line) {}
+
+CommandLinePrefStore::~CommandLinePrefStore() {}
+
+void CommandLinePrefStore::ApplyStringSwitches(
+    const CommandLinePrefStore::SwitchToPreferenceMapEntry string_switch[],
+    size_t size) {
+  for (size_t i = 0; i < size; ++i) {
+    if (command_line_->HasSwitch(string_switch[i].switch_name)) {
+      SetValue(string_switch[i].preference_path,
+               base::MakeUnique<base::StringValue>(
+                   command_line_->GetSwitchValueASCII(
+                       string_switch[i].switch_name)),
+               WriteablePrefStore::DEFAULT_PREF_WRITE_FLAGS);
+    }
+  }
+}
+
+void CommandLinePrefStore::ApplyPathSwitches(
+    const CommandLinePrefStore::SwitchToPreferenceMapEntry path_switch[],
+    size_t size) {
+  for (size_t i = 0; i < size; ++i) {
+    if (command_line_->HasSwitch(path_switch[i].switch_name)) {
+      SetValue(
+          path_switch[i].preference_path,
+          base::MakeUnique<base::StringValue>(
+              command_line_->GetSwitchValuePath(path_switch[i].switch_name)
+                  .value()),
+          WriteablePrefStore::DEFAULT_PREF_WRITE_FLAGS);
+    }
+  }
+}
+
+void CommandLinePrefStore::ApplyIntegerSwitches(
+    const CommandLinePrefStore::SwitchToPreferenceMapEntry integer_switch[],
+    size_t size) {
+  for (size_t i = 0; i < size; ++i) {
+    if (command_line_->HasSwitch(integer_switch[i].switch_name)) {
+      std::string str_value = command_line_->GetSwitchValueASCII(
+          integer_switch[i].switch_name);
+      int int_value = 0;
+      if (!base::StringToInt(str_value, &int_value)) {
+        LOG(ERROR) << "The value " << str_value << " of "
+                   << integer_switch[i].switch_name
+                   << " can not be converted to integer, ignoring!";
+        continue;
+      }
+      SetValue(integer_switch[i].preference_path,
+               base::MakeUnique<base::FundamentalValue>(int_value),
+               WriteablePrefStore::DEFAULT_PREF_WRITE_FLAGS);
+    }
+  }
+}
+
+void CommandLinePrefStore::ApplyBooleanSwitches(
+      const CommandLinePrefStore::BooleanSwitchToPreferenceMapEntry
+      boolean_switch_map[], size_t size) {
+  for (size_t i = 0; i < size; ++i) {
+    if (command_line_->HasSwitch(boolean_switch_map[i].switch_name)) {
+      SetValue(boolean_switch_map[i].preference_path,
+               base::MakeUnique<base::FundamentalValue>(
+                   boolean_switch_map[i].set_value),
+               WriteablePrefStore::DEFAULT_PREF_WRITE_FLAGS);
+    }
+  }
+}