Eliminate all code related to the AutomaticProfileResetter.

chrome/browser/profile_resetter/automatic_profile_resetter.h

-// 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.
-
-#ifndef CHROME_BROWSER_PROFILE_RESETTER_AUTOMATIC_PROFILE_RESETTER_H_
-#define CHROME_BROWSER_PROFILE_RESETTER_AUTOMATIC_PROFILE_RESETTER_H_
-
-#include <string>
-
-#include "base/basictypes.h"
-#include "base/memory/ref_counted.h"
-#include "base/memory/scoped_ptr.h"
-#include "base/memory/weak_ptr.h"
-#include "base/strings/string_piece.h"
-#include "base/task_runner.h"
-#include "chrome/browser/profile_resetter/automatic_profile_resetter_mementos.h"
-#include "components/keyed_service/core/keyed_service.h"
-
-class AutomaticProfileResetterDelegate;
-class Profile;
-
-namespace base {
-class DictionaryValue;
-class ListValue;
-}
-
-// This service is responsible for evaluating whether the criteria for showing
-// the one-time profile reset prompt are satisfied, and for potentially
-// triggering the prompt. To ensure that the prompt only appears at most once
-// for any given profile, a "memento" that the prompt has appeared is written to
-// the profile on disk; see automatic_profile_resetter_mementos.h for details.
-// The service is created automatically with the Profile and is activated right
-// away by its factory. To avoid delaying start-up, however, it will only start
-// working after a short delay.
-// All methods in this class shall be called on the UI thread, except when noted
-// otherwise.
-class AutomaticProfileResetter : public KeyedService {
- public:
-  // Enumeration listing the possible outcomes of triggering the profile reset
-  // prompt.
-  enum PromptResult {
-    // The reset prompt was not triggered because only a dry-run was performed,
-    // or because it was not supported on the current platform.
-    PROMPT_NOT_TRIGGERED,
-    // The reset bubble actually got shown. In contrast to the wrench menu item
-    // that can always be shown, the bubble might be delayed or might never be
-    // shown if another bubble was shown at the time of triggering the prompt.
-    // This enumeration value is usually recorded in conjunction with another
-    // PromptResult, the absence of which indicates that the prompt was ignored.
-    PROMPT_SHOWN_BUBBLE,
-    // The user selected "Reset" or "No, thanks" (respectively) directly from
-    // within the bubble.
-    PROMPT_ACTION_RESET,
-    PROMPT_ACTION_NO_RESET,
-    // The reset bubble was shown, then dismissed without taking definitive
-    // action. Then, however, the user initiated or refrained from doing a reset
-    // (respectively) from the conventional, WebUI-based reset dialog.
-    PROMPT_FOLLOWED_BY_WEBUI_RESET,
-    PROMPT_FOLLOWED_BY_WEBUI_NO_RESET,
-    // The reset bubble was suppressed (not shown) because another bubble was
-    // already being shown at the time. Regardless, however, the user initiated
-    // or refrained from doing a reset (respectively) from the conventional,
-    // WebUI-based reset dialog.
-    PROMPT_NOT_SHOWN_BUBBLE_BUT_HAD_WEBUI_RESET,
-    PROMPT_NOT_SHOWN_BUBBLE_BUT_HAD_WEBUI_NO_RESET,
-    PROMPT_RESULT_MAX
-  };
-
-  explicit AutomaticProfileResetter(Profile* profile);
-  virtual ~AutomaticProfileResetter();
-
-  // Initializes the service if it is enabled in the field trial. Otherwise,
-  // skips the initialization steps, and also permanently disables the service.
-  // Called by AutomaticProfileResetterFactory.
-  void Initialize();
-
-  // Fires up the service by unleashing the asynchronous evaluation flow, unless
-  // the service has been already disabled in Initialize() or there is no
-  // |program_| to run (in which case the service also gets disabled).
-  // Called by the AutomaticProfileResetterFactory.
-  void Activate();
-
-  // Called in case the user chooses to reset their profile settings from inside
-  // the reset bubble. Will trigger the reset, optionally |send_feedback|, and
-  // conclude the reset prompt flow.
-  void TriggerProfileReset(bool send_feedback);
-
-  // Called in case the user chooses from inside the reset bubble that they do
-  // not want to reset their profile settings. Will conclude the reset prompt
-  // flow without setting off a reset.
-  void SkipProfileReset();
-
-  // Returns whether or not the profile reset prompt flow is currently active,
-  // that is, we have triggered the prompt and are waiting for the user to take
-  // definitive action (and we are not yet performing a reset).
-  bool IsResetPromptFlowActive() const;
-
-  // Returns whether or not the profile reset banner should be shown on the
-  // WebUI-based settings page.
-  bool ShouldShowResetBanner() const;
-
-  // Called to give notice that the reset bubble has actually been shown.
-  void NotifyDidShowResetBubble();
-
-  // Called to give notice that the conventional, WebUI-based settings reset
-  // dialog has been opened. This will dismiss the menu item in the wrench menu.
-  // This should always be followed by a corresponding call to
-  // NotifyDidCloseWebUIResetDialog().
-  void NotifyDidOpenWebUIResetDialog();
-
-  // Called to give notice that the conventional, WebUI-based settings reset
-  // dialog has been closed, with |performed_reset| indicating whether or not a
-  // reset was requested. This is required so that we can record the appropriate
-  // PromptResult, dismiss the prompt, and conclude the reset prompt flow early
-  // without setting off any resets in the future.
-  void NotifyDidCloseWebUIResetDialog(bool performed_reset);
-
-  // Called to give notice that reset banner has been dismissed as a result of
-  // user action on the WebUI-based settings page itself.
-  void NotifyDidCloseWebUIResetBanner();
-
-  base::WeakPtr<AutomaticProfileResetter> AsWeakPtr() {
-    return weak_ptr_factory_.GetWeakPtr();
-  }
-
-  // Should be called before Activate().
-  void SetProgramForTesting(const std::string& program);
-
-  // Should be called before Activate().
-  void SetHashSeedForTesting(const std::string& hash_seed);
-
-  // Should be called before Activate().
-  void SetDelegateForTesting(
-      scoped_ptr<AutomaticProfileResetterDelegate> delegate);
-
-  // Should be called before Activate(). Sets the task runner to be used to post
-  // task |PrepareEvaluationFlow| in a delayed manner.
-  void SetTaskRunnerForWaitingForTesting(
-      const scoped_refptr<base::TaskRunner>& task_runner);
-
-  // KeyedService:
-  virtual void Shutdown() OVERRIDE;
-
- private:
-  class InputBuilder;
-  struct EvaluationResults;
-
-  enum State {
-    STATE_UNINITIALIZED,
-    STATE_INITIALIZED,
-    STATE_DISABLED,
-    STATE_WAITING_ON_DEPENDENCIES,
-    STATE_READY,
-    STATE_EVALUATING_CONDITIONS,
-    // The reset prompt has been triggered; but the reset bubble has not yet
-    // been shown.
-    STATE_HAS_TRIGGERED_PROMPT,
-    // The reset prompt has been triggered; the reset bubble has been shown, and
-    // potentially already dismissed by the user.
-    STATE_HAS_SHOWN_BUBBLE,
-    STATE_PERFORMING_RESET,
-    STATE_DONE
-  };
-
-  // Prepares the asynchronous evaluation flow by requesting services that it
-  // depends on to make themselves ready.
-  void PrepareEvaluationFlow();
-
-  // Called back by |resetter_delegate_| when the template URL service is ready.
-  void OnTemplateURLServiceIsLoaded();
-
-  // Called back by |resetter_delegate_| when the loaded modules have been
-  // enumerated.
-  void OnLoadedModulesAreEnumerated();
-
-  // Invoked by the above two methods. Kicks off the actual evaluation flow.
-  void OnDependencyIsReady();
-
-  // Begins the asynchronous evaluation flow, which will assess whether the
-  // criteria for showing the reset prompt are met, whether we have already
-  // shown the prompt; and, in the end, will potentially trigger the prompt.
-  void BeginEvaluationFlow();
-
-  // Called by InputBuilder once it has finished assembling the |program_input|,
-  // and will continue with the evaluation flow by triggering the evaluator
-  // program on the worker thread.
-  void ContinueWithEvaluationFlow(
-      scoped_ptr<base::DictionaryValue> program_input);
-
-  // Performs the bulk of the work. Invokes the JTL interpreter to run the
-  // |program| that will evaluate whether the conditions are met for showing the
-  // reset prompt. The program will make this decision based on the state
-  // information contained in |input| in the form of key-value pairs. The
-  // program will only see hashed keys and values that are produced using
-  // |hash_seed| as a key.
-  static scoped_ptr<EvaluationResults> EvaluateConditionsOnWorkerPoolThread(
-      const std::string& hash_seed,
-      const std::string& program,
-      scoped_ptr<base::DictionaryValue> program_input);
-
-  // Reports the given metrics through UMA. Virtual, so it can be mocked out in
-  // tests to verify that the correct value are being reported.
-  virtual void ReportStatistics(uint32 satisfied_criteria_mask,
-                                uint32 combined_status_mask);
-
-  // Called back when EvaluateConditionsOnWorkerPoolThread completes executing
-  // the program with |results|. Finishes the evaluation flow, and, based on the
-  // result, potentially initiates the reset prompt flow.
-  void FinishEvaluationFlow(scoped_ptr<EvaluationResults> results);
-
-  // Begins the reset prompt flow by triggering the reset prompt, which consists
-  // of two parts: (1.) the profile reset (pop-up) bubble, and (2.) a menu item
-  // in the wrench menu (provided by a GlobalError).
-  // The flow lasts until we receive a clear indication from the user about
-  // whether or not they wish to reset their settings. This indication can come
-  // in a variety of flavors:
-  //  * taking definitive action (i.e. selecting either "Reset" or "No, thanks")
-  //    in the pop-up reset bubble itself,
-  //  * dismissing the bubble, but then selecting the wrench menu item, which
-  //    takes them to the WebUI reset dialog in chrome://settings, and then the
-  //    user can make their choice there,
-  //  * the user going to the WebUI reset dialog by themself.
-  // For the most part, the conclusion of the reset flow coincides with when the
-  // reset prompt is dismissed, with the one exception being that the prompt is
-  // closed as soon as the WebUI reset dialog is opened, we do not wait until
-  // the user actually makes a choice in that dialog.
-  void BeginResetPromptFlow();
-
-  // Called back by the ProfileResetter once resetting the profile settings has
-  // been completed, when requested by the user from inside the reset bubble.
-  // Will dismiss the prompt and conclude the reset prompt flow.
-  void OnProfileSettingsResetCompleted();
-
-  // Reports the result of triggering the prompt through UMA. Virtual, so it can
-  // be mocked out in tests to verify that the correct value is being reported.
-  virtual void ReportPromptResult(PromptResult result);
-
-  // Writes the memento values returned by the evaluation program to disk, and
-  // then destroys |evaluation_results_|.
-  void PersistMementos();
-
-  // Concludes the reset prompt flow.
-  void FinishResetPromptFlow();
-
-  Profile* profile_;
-
-  State state_;
-  bool enumeration_of_loaded_modules_ready_;
-  bool template_url_service_ready_;
-  bool has_already_dismissed_prompt_;
-
-  scoped_ptr<InputBuilder> input_builder_;
-  std::string hash_seed_;
-  std::string program_;
-
-  scoped_ptr<EvaluationResults> evaluation_results_;
-
-  bool should_show_reset_banner_;
-
-  scoped_ptr<AutomaticProfileResetterDelegate> delegate_;
-  scoped_refptr<base::TaskRunner> task_runner_for_waiting_;
-
-  base::WeakPtrFactory<AutomaticProfileResetter> weak_ptr_factory_;
-
-  DISALLOW_COPY_AND_ASSIGN(AutomaticProfileResetter);
-};
-
-#endif  // CHROME_BROWSER_PROFILE_RESETTER_AUTOMATIC_PROFILE_RESETTER_H_