Adding previews information to PLM UKM

chrome/browser/previews/previews_infobar_delegate.h

 // Copyright 2016 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_PREVIEWS_PREVIEWS_INFOBAR_DELEGATE_H_
 #define CHROME_BROWSER_PREVIEWS_PREVIEWS_INFOBAR_DELEGATE_H_
 
 #include "base/callback.h"
 #include "base/strings/string16.h"
 #include "base/time/time.h"
@@ skipping 50 matching lines @@
       bool is_data_saver_user,
       const OnDismissPreviewsInfobarCallback& on_dismiss_callback);
 
   // ConfirmInfoBarDelegate overrides:
   infobars::InfoBarDelegate::InfoBarIdentifier GetIdentifier() const override;
   bool ShouldExpire(const NavigationDetails& details) const override;
   void InfoBarDismissed() override;
   int GetButtons() const override;
   bool LinkClicked(WindowOpenDisposition disposition) override;
 
+  // Records that the navigation currently committed in this web contents as an
+  // opt out in PLM UKM.
+  void RecordUKMOptOut();

[rkaplow, 2017/06/27 22:17:09]

I might rename these method - it sounds like it is related to opting out of UKM

[RyanSturm, 2017/07/11 21:46:41]

Done.

+
   previews::PreviewsType previews_type_;
   // The time at which the preview associated with this infobar was created. A
   // value of zero means that the creation time is unknown.
   const base::Time previews_freshness_;
   mutable PreviewsInfoBarAction infobar_dismissed_action_;
 
   const base::string16 message_text_;
 
   OnDismissPreviewsInfobarCallback on_dismiss_callback_;
 
   DISALLOW_COPY_AND_ASSIGN(PreviewsInfoBarDelegate);
 };
 
 #endif  // CHROME_BROWSER_PREVIEWS_PREVIEWS_INFOBAR_DELEGATE_H_