Enforces order for settings reset

chrome/browser/safe_browsing/settings_reset_prompt/settings_reset_prompt_controller.h

 // Copyright 2017 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_SAFE_BROWSING_SETTINGS_RESET_PROMPT_SETTINGS_RESET_PROMPT_CONTROLLER_H_
 #define CHROME_BROWSER_SAFE_BROWSING_SETTINGS_RESET_PROMPT_SETTINGS_RESET_PROMPT_CONTROLLER_H_
 
 #include <memory>
 #include <vector>
 
@@ skipping 65 matching lines @@
 
   DISALLOW_COPY_AND_ASSIGN(SettingsResetPromptController);
 };
 
 // Function to be called after startup in order to display the settings reset
 // prompt. The function will figure out if a prompt is needed, and if so, show
 // the dialog after a delay as determined by the |kSettingsResetPrompt|
 // feature parameters.
 void MaybeShowSettingsResetPromptWithDelay();
 
+// Delegate for MaybeShowSettingsResetPromptWithDelay() that can be overriden
+// by tests that only want to check if the flow for the settings reset prompt
+// will be initiated.
+class SettingsResetPromptDelegate {
+ public:
+  SettingsResetPromptDelegate();
+  virtual ~SettingsResetPromptDelegate();
+
+  virtual void ShowSettingsResetPromptWithDelay() const = 0;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(SettingsResetPromptDelegate);
+};
+
+// Sets the global SettingsResetPromptDelegate, usually for testing.
+void SetSettingsResetPromptDelegate(SettingsResetPromptDelegate* delegate);
+
 }  // namespace safe_browsing
 
 #endif  // CHROME_BROWSER_SAFE_BROWSING_SETTINGS_RESET_PROMPT_SETTINGS_RESET_PROMPT_CONTROLLER_H_