[MD settings] disable clear browsing data while it is running

chrome/browser/ui/webui/settings/settings_clear_browsing_data_handler.h

Index: chrome/browser/ui/webui/settings/settings_clear_browsing_data_handler.h
diff --git a/chrome/browser/ui/webui/settings/settings_clear_browsing_data_handler.h b/chrome/browser/ui/webui/settings/settings_clear_browsing_data_handler.h
index d8a09e5810c4b9962beb947554aafcebc168fb71..7ba5a3090d54dffe86d5c06eb69faa23514fd88a 100644
--- a/chrome/browser/ui/webui/settings/settings_clear_browsing_data_handler.h
+++ b/chrome/browser/ui/webui/settings/settings_clear_browsing_data_handler.h
@@ -6,6 +6,7 @@
 #define CHROME_BROWSER_UI_WEBUI_SETTINGS_SETTINGS_CLEAR_BROWSING_DATA_HANDLER_H_
 
 #include <memory>
+#include <string>
 #include <vector>
 
 #include "base/macros.h"
@@ -45,7 +46,9 @@ class ClearBrowsingDataHandler : public SettingsPageUIHandler,
   void HandleClearBrowsingData(const base::ListValue* value);
 
   // BrowsingDataRemover::Observer implementation.
-  // Re-enables clear button once all requested data has been removed.
+  // Enable/disable clear button.
+  void OnBrowsingDataRemoving(bool is_removing) override;
+  // Edge trigger. Show completion information.

[Dan Beam, 2016/07/07 18:06:49]

i'd just remove the comments so people look at the BrowsingDataRemover::Observer
version

[dschuyler, 2016/07/20 19:01:15]

Done.

   void OnBrowsingDataRemoverDone() override;
 
   // Updates UI when the pref to allow clearing history changes.