Add a browsing data counter factory on iOS

ios/chrome/browser/browsing_data/ios_browsing_data_counter_factory.cc

+// 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.
+
+#include "ios/chrome/browser/browsing_data/ios_browsing_data_counter_factory.h"
+
+#include "base/bind.h"
+#include "base/bind_helpers.h"
+#include "base/memory/ptr_util.h"
+#include "components/browser_sync/profile_sync_service.h"
+#include "components/browsing_data/core/counters/autofill_counter.h"
+#include "components/browsing_data/core/counters/browsing_data_counter.h"
+#include "components/browsing_data/core/counters/history_counter.h"
+#include "components/browsing_data/core/counters/passwords_counter.h"
+#include "components/browsing_data/core/pref_names.h"
+#include "components/keyed_service/core/service_access_type.h"
+#include "ios/chrome/browser/experimental_flags.h"
+#include "ios/chrome/browser/history/history_service_factory.h"
+#include "ios/chrome/browser/history/web_history_service_factory.h"
+#include "ios/chrome/browser/passwords/ios_chrome_password_store_factory.h"
+#include "ios/chrome/browser/sync/ios_chrome_profile_sync_service_factory.h"
+#include "ios/chrome/browser/web_data_service_factory.h"
+
+namespace {
+
+history::WebHistoryService* GetUpdatedWebHistoryService(
+    ios::ChromeBrowserState* browser_state) {
+  return ios::WebHistoryServiceFactory::GetForBrowserState(browser_state);
+}
+
+}  // namespace
+
+// static
+std::unique_ptr<browsing_data::BrowsingDataCounter>
+IOSBrowsingDataCounterFactory::GetForBrowserStateAndPref(
+    ios::ChromeBrowserState* browser_state,
+    base::StringPiece pref_name) {
+  if (!experimental_flags::IsNewClearBrowsingDataUIEnabled())
+    return nullptr;
+
+  if (pref_name == browsing_data::prefs::kDeleteBrowsingHistory) {
+    return base::MakeUnique<browsing_data::HistoryCounter>(
+        ios::HistoryServiceFactory::GetForBrowserStateIfExists(
+            browser_state, ServiceAccessType::EXPLICIT_ACCESS),
+        base::Bind(&GetUpdatedWebHistoryService,

[sdefresne, 2016/09/20 11:50:46]

nit: Can't you just bind ios::WebHistoryServiceFactory::GetForBrowserState?

base::Bind(
    &ios::WebHistoryServiceFactory::GetForBrowserState,
    base::Unretained(browser_state)),

Code is fine as is, so if the answer is no, I'm okay with current code.

[ioanap, 2016/09/20 12:43:29]

Indeed I can. Thank you!

+                   base::Unretained(browser_state)),
+        IOSChromeProfileSyncServiceFactory::GetForBrowserState(browser_state));
+  }
+
+  if (pref_name == browsing_data::prefs::kDeletePasswords) {
+    return base::MakeUnique<browsing_data::PasswordsCounter>(
+        IOSChromePasswordStoreFactory::GetForBrowserState(
+            browser_state, ServiceAccessType::EXPLICIT_ACCESS));
+  }
+
+  if (pref_name == browsing_data::prefs::kDeleteFormData) {
+    return base::MakeUnique<browsing_data::AutofillCounter>(
+        ios::WebDataServiceFactory::GetAutofillWebDataForBrowserState(
+            browser_state, ServiceAccessType::EXPLICIT_ACCESS));
+  }
+
+  return nullptr;
+}