Added the AutomaticProfileResetter service.

chrome/browser/profile_resetter/automatic_profile_resetter_mementos.cc

+// 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.
+
+#include "chrome/browser/profile_resetter/automatic_profile_resetter_mementos.h"
+
+#include "base/file_util.h"
+#include "base/files/file_path.h"
+#include "base/logging.h"
+#include "base/values.h"
+#include "chrome/browser/browser_process.h"
+#include "chrome/browser/prefs/scoped_user_pref_update.h"
+#include "chrome/browser/profiles/profile.h"
+#include "chrome/common/pref_names.h"
+#include "content/public/browser/browser_thread.h"
+
+using base::DictionaryValue;
+
+namespace profile_resetter {
+
+namespace {
+const char kMementoFileName[] = "Reset Prompt Memento";
+}
+
+// AutomaticProfileResetter::PreferenceHostedPromptMemento -------------------
+
+PreferenceHostedPromptMemento::PreferenceHostedPromptMemento(Profile* profile)
+    : profile_(profile) {}
+PreferenceHostedPromptMemento::~PreferenceHostedPromptMemento() {}
+
+std::string PreferenceHostedPromptMemento::ReadValue() const {
+  PrefService* prefs = profile_->GetPrefs();
+  DCHECK(prefs);
+  return prefs->GetString(prefs::kProfileResetPromptMemento);
+}
+
+void PreferenceHostedPromptMemento::StoreValue(const std::string& value) {
+  PrefService* prefs = profile_->GetPrefs();
+  DCHECK(prefs);
+  prefs->SetString(prefs::kProfileResetPromptMemento, value);
+}
+
+// AutomaticProfileResetter::LocalStateHostedPromptMemento -------------------
+
+LocalStateHostedPromptMemento::LocalStateHostedPromptMemento(Profile* profile)
+    : profile_(profile) {}
+LocalStateHostedPromptMemento::~LocalStateHostedPromptMemento() {}
+
+std::string LocalStateHostedPromptMemento::ReadValue() const {
+  PrefService* local_state = g_browser_process->local_state();
+  DCHECK(local_state);
+
+  const DictionaryValue* prompt_shown_dict =
+      local_state->GetDictionary(prefs::kProfileResetPromptMemento);
+  std::string profile_key = GetProfileKey();
+  if (!prompt_shown_dict || profile_key.empty()) {
+    NOTREACHED();
+    return "";
+  }
+  std::string value;
+  return prompt_shown_dict->GetStringWithoutPathExpansion(profile_key, &value)
+             ? value
+             : "";
+}
+
+void LocalStateHostedPromptMemento::StoreValue(const std::string& value) {
+  PrefService* local_state = g_browser_process->local_state();
+  DCHECK(local_state);
+
+  DictionaryPrefUpdate prompt_shown_dict_update(
+      local_state, prefs::kProfileResetPromptMemento);
+  std::string profile_key = GetProfileKey();
+  if (profile_key.empty()) {
+    NOTREACHED();
+    return;
+  }
+  prompt_shown_dict_update.Get()->SetStringWithoutPathExpansion(profile_key,
+                                                                value);
+}
+
+std::string LocalStateHostedPromptMemento::GetProfileKey() const {
+  return profile_->GetPath().BaseName().MaybeAsASCII();
+}
+
+// AutomaticProfileResetter::FileHostedPromptMemento -------------------------
+
+FileHostedPromptMemento::FileHostedPromptMemento(Profile* profile)
+    : profile_(profile) {}
+FileHostedPromptMemento::~FileHostedPromptMemento() {}
+
+void FileHostedPromptMemento::ReadValue(
+    const ReadValueCallback& callback) const {
+  base::FilePath path = GetMementoFilePath();
+  content::BrowserThread::PostTaskAndReplyWithResult(
+      content::BrowserThread::FILE,
+      FROM_HERE,
+      base::Bind(&ReadValueOnFileThread, path),
+      callback);
+}
+
+void FileHostedPromptMemento::StoreValue(const std::string& value) {
+  base::FilePath path = GetMementoFilePath();
+  content::BrowserThread::PostTask(
+      content::BrowserThread::FILE,
+      FROM_HERE,
+      base::Bind(&StoreValueOnFileThread, path, value));
+}
+
+std::string FileHostedPromptMemento::ReadValueOnFileThread(
+    const base::FilePath& memento_file_path) {
+  std::string value;
+  base::ReadFileToString(memento_file_path, &value);
+  return value;
+}
+
+void FileHostedPromptMemento::StoreValueOnFileThread(
+    const base::FilePath& memento_file_path,
+    const std::string& value) {
+  int retval =
+      file_util::WriteFile(memento_file_path, value.c_str(), value.size());
+  DCHECK_EQ(retval, (int)value.size());
+}
+
+base::FilePath FileHostedPromptMemento::GetMementoFilePath() const {
+  return profile_->GetPath().Append(kMementoFileName);
+}
+
+}  // namespace profile_resetter