Settings reset prompt: add more UI metrics.

chrome/browser/ui/views/settings_reset_prompt_dialog.h

Index: chrome/browser/ui/views/settings_reset_prompt_dialog.h
diff --git a/chrome/browser/ui/views/settings_reset_prompt_dialog.h b/chrome/browser/ui/views/settings_reset_prompt_dialog.h
index 5a2414839092a84cb7780b2358b974f0dd360327..b31c8d0b073c491c4249e6a0211ae85efac91d39 100644
--- a/chrome/browser/ui/views/settings_reset_prompt_dialog.h
+++ b/chrome/browser/ui/views/settings_reset_prompt_dialog.h
@@ -46,6 +46,10 @@ class SettingsResetPromptDialog : public views::DialogDelegateView {
   base::string16 GetDialogButtonLabel(ui::DialogButton button) const override;
   bool Accept() override;
   bool Cancel() override;
+  // We override |Close()| because we want to distinguish in our metrics between
+  // users clicking the cancel button versus dismissing the dialog in other
+  // ways.
+  bool Close() override;
 
   // views::View overrides.
   gfx::Size GetPreferredSize() const override;