Settings reset prompt: add more UI metrics.

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 30 matching lines @@
   // Returns the offset into the main text string where a URL was inserted. To
   // be used by the dialog to apply an appropriate style to the URL text.
   gfx::Range GetMainTextUrlRange() const;
   // |DialogShown()| will be called by the dialog when the dialog's |Show()|
   // method is called. This allows the controller to notify the model that the
   // dialog has been shown so that preferences can be updated.
   void DialogShown();
   // |Accept()| will be called by the dialog when the user clicks the main
   // button, after which the dialog will be closed.
   void Accept();
-  // |Cancel()| will be called by the dialog when the user clicks the dismiss
-  // button on the top right, after which the dialog will be closed.
+  // |Cancel()| will be called by the dialog when the user clicks the cancel
+  // button, after which the dialog will be closed.
   void Cancel();
+  // |Close()| will be called by the dialog when the user dismisses the dialog,
+  // for example by clicking the x in the top right corner or by pressing the
+  // Escape key.
+  void Close();
 
  private:
   ~SettingsResetPromptController();
   void InitMainText();
   // Function to be called sometime after |Accept()| or |Cancel()| has been
   // called to perform any final tasks (such as metrcis reporting) and delete
   // this object.
   void OnInteractionDone();
 
   std::unique_ptr<SettingsResetPromptModel> model_;
   base::string16 main_text_;
   gfx::Range main_text_url_range_;
 
   // Used for metrics reporting.
   base::Time time_dialog_shown_;
 
   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();
 
 }  // namespace safe_browsing
 
 #endif  // CHROME_BROWSER_SAFE_BROWSING_SETTINGS_RESET_PROMPT_SETTINGS_RESET_PROMPT_CONTROLLER_H_