Prepare ClearBrowsingDataDialogFragment for browsing data counters.

chrome/browser/browsing_data/browsing_data_counter_utils.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_BROWSING_DATA_BROWSING_DATA_COUNTER_UTILS_H_
 #define CHROME_BROWSER_BROWSING_DATA_BROWSING_DATA_COUNTER_UTILS_H_
 
 #include "base/strings/string16.h"
 #include "chrome/browser/browsing_data/browsing_data_counter.h"
 
 // Whether the browsing data counters experiment is enabled.
 bool AreCountersEnabled();
 
 // Constructs the text to be displayed by a counter from the given |result|.
 base::string16 GetCounterTextFromResult(
     const BrowsingDataCounter::Result* result);
 
+// Browsing data types as seen in the Android UI.
+// TODO(msramek): Reuse this enum as the canonical representation of the
+// user-facing browsing data types in the Desktop UI as well.
+//
+// A Java counterpart will be generated for this enum.
+// GENERATED_JAVA_ENUM_PACKAGE: org.chromium.chrome.browser
+enum BrowsingDataType {
+  HISTORY,
+  CACHE,
+  COOKIES,
+  PASSWORDS,
+  FORM_DATA,
+  BOOKMARKS,
+  NUM_TYPES
+};
+
+// Copies the name of the deletion preference corresponding to the given
+// |data_type| to |out_pref|. Returns false if no such preference exists.
+bool GetDeletionPreferenceFromDataType(
+    BrowsingDataType data_type, std::string* out_pref);
+
 // Creates a new instance of BrowsingDataCounter that is counting the data
 // related to a given deletion preference |pref_name|.
 BrowsingDataCounter* CreateCounterForPreference(std::string pref_name);
 
 #endif  // CHROME_BROWSER_BROWSING_DATA_BROWSING_DATA_COUNTER_UTILS_H_