Issue 501916 : Add data type counts to profile deletion flow

chrome/browser/profiles/profile_statistics.h

+// Copyright 2015 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_PROFILES_PROFILE_STATISTICS_H_
+#define CHROME_BROWSER_PROFILES_PROFILE_STATISTICS_H_
+
+#include <string>
+#include <utility>
+#include <vector>
+#include "base/task/cancelable_task_tracker.h"
+#include "chrome/browser/profiles/profile.h"
+
+namespace profiles {
+
+// Constants for the categories in ProfileStatisticsReturn
+extern const char kProfileStatisticsBrowsingHistory[];
+extern const char kProfileStatisticsPasswords[];
+extern const char kProfileStatisticsBookmarks[];
+extern const char kProfileStatisticsSettings[];
+
+// Definition of a single return value of |ProfileStatisticsCallback|. If
+// |success| is false, the statistics failed to load and |count| is undefined.
+// The data look like these: {"BrowsingHistory", 912, true},
+// {"Passwords", 71, true}, {"Bookmarks", 120, true}, {"Settings", 200, true}
+struct ProfileStatisticsDatum {

[Mike Lerman, 2015/08/17 14:23:38]

I am highly entertained by your use of Datum! Sadly, it doesn't convey any
meaning (it's like labeling a variable "data"). 

You could go with: struct ProfileCategoryStat and typedef ProfileCategoryStats
or struct ProfileCategoryStatistic and typedef ProfileCategoryStatistics.

[lwchkg, 2015/08/19 06:19:45]

Acknowledged.

+  std::string category;
+  int count;
+  bool success;
+};
+
+// Definition of the return value of |ProfileStatisticsCallback|.
+typedef std::vector<ProfileStatisticsDatum> ProfileStatisticsReturn;
+
+// Definition of the callback function. Note that a copy of
+// |ProfileStatisticsReturn| is made each time the callback is called.
+typedef base::Callback<void(ProfileStatisticsReturn)>
+    ProfileStatisticsCallback;
+
+// This function collects statistical information about |profile| and returns
+// the information via |callback|. Currently bookmarks, history, logins and
+// preferences are counted. The callback function will probably be called more
+// than once so binding parameters with bind::Passed() is prohibited.
+void GetProfileStatistics(Profile* profile,
+                          const ProfileStatisticsCallback& callback,
+                          base::CancelableTaskTracker* tracker);
+
+}  // namespace profiles
+
+#endif  // CHROME_BROWSER_PROFILES_PROFILE_STATISTICS_H_