Simplify the support string in the Clear Browsing Data dialog.

chrome/browser/ui/webui/options/clear_browser_data_handler.h

 // Copyright (c) 2012 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_UI_WEBUI_OPTIONS_CLEAR_BROWSER_DATA_HANDLER_H_
 #define CHROME_BROWSER_UI_WEBUI_OPTIONS_CLEAR_BROWSER_DATA_HANDLER_H_
 
 #include "base/memory/scoped_vector.h"
 #include "base/prefs/pref_member.h"
 #include "chrome/browser/browsing_data/browsing_data_counter.h"
 #include "chrome/browser/browsing_data/browsing_data_remover.h"
+#include "chrome/browser/sync/profile_sync_service.h"
 #include "chrome/browser/ui/webui/options/options_ui.h"
 
 namespace options {
 
 // Clear browser data handler page UI handler.
 class ClearBrowserDataHandler : public OptionsPageUIHandler,
-                                public BrowsingDataRemover::Observer {
+                                public BrowsingDataRemover::Observer,
+                                public sync_driver::SyncServiceObserver {
  public:
   ClearBrowserDataHandler();
   ~ClearBrowserDataHandler() override;
 
   // OptionsPageUIHandler implementation.
   void GetLocalizedValues(base::DictionaryValue* localized_strings) override;
   void InitializeHandler() override;
   void InitializePage() override;
 
   // WebUIMessageHandler implementation.
@@ skipping 18 matching lines @@
 
   // Updates the counter of the pref |pref_name| in the UI according
   // to a callback from a |BrowsingDataCounter| that specifies whether
   // the counting has |finished| and what the |count| is. The |count| will
   // be substituted into the string with the ID |text_grd_id|.
   void UpdateCounterText(const std::string& pref_name,
                          int text_grd_id,
                          bool finished,
                          uint32 count);
 
+  // Called when the Sync service state changes. Updates the support string

[Bernhard Bauer, 2015/09/26 06:46:07]

Mention which interface this method implements? Then you don't have to mention
when the method is called, as that should be the comment for the pure virtual
method in the interface (but you can keep the comment that says what this
particular implementation does).

[msramek, 2015/09/28 08:41:42]

Done.

+  // at the bottom of the dialog.
+  void OnStateChanged() override;
+
   // If non-null it means removal is in progress. BrowsingDataRemover takes care
   // of deleting itself when done.
   BrowsingDataRemover* remover_;
 
   // Keeps track of whether clearing LSO data is supported.
   BooleanPrefMember clear_plugin_lso_data_enabled_;
 
   // Keeps track of whether Pepper Flash is enabled and thus Flapper-specific
   // settings and removal options (e.g. Content Licenses) are available.
   BooleanPrefMember pepper_flash_settings_enabled_;
 
   // Keeps track of whether deleting browsing history and downloads is allowed.
   BooleanPrefMember allow_deleting_browser_history_;
 
   // Counters that calculate the data volume for some of the data types.
   ScopedVector<BrowsingDataCounter> counters_;
 
+  // Informs us whether the user is syncing their data.
+  ProfileSyncService* sync_service_;
+
   DISALLOW_COPY_AND_ASSIGN(ClearBrowserDataHandler);
 };
 
 }  // namespace options
 
 #endif  // CHROME_BROWSER_UI_WEBUI_OPTIONS_CLEAR_BROWSER_DATA_HANDLER_H_