Strawman proposal for chrome.experimental.clear.*

chrome/browser/browsing_data_remover.cc

 // Copyright (c) 2011 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 "chrome/browser/browsing_data_remover.h"
 
 #include <map>
 #include <set>
 
 #include "base/callback.h"
@@ skipping 84 matching lines @@
       waiting_for_clear_networking_history_(false),
       waiting_for_clear_cache_(false),
       waiting_for_clear_lso_data_(false) {
   DCHECK(profile);
 }
 
 BrowsingDataRemover::~BrowsingDataRemover() {
   DCHECK(all_done());
 }
 
+// Static.
+void BrowsingDataRemover::set_removing(bool removing) {
+  DCHECK(removing_ != removing);
+  removing_ = removing;
+}
+
 void BrowsingDataRemover::Remove(int remove_mask) {
-  DCHECK(!removing_);
-  removing_ = true;
+  set_removing(true);
 
   if (remove_mask & REMOVE_HISTORY) {
     HistoryService* history_service =
         profile_->GetHistoryService(Profile::EXPLICIT_ACCESS);
     if (history_service) {
       std::set<GURL> restrict_urls;
       UserMetrics::RecordAction(UserMetricsAction("ClearBrowsingData_History"));
       waiting_for_clear_history_ = true;
       history_service->ExpireHistoryBetween(restrict_urls,
           delete_begin_, delete_end_,
@@ skipping 222 matching lines @@
   if (!all_done())
     return;
 
   // The NetLog contains download history, but may also contain form data,
   // cookies and passwords.  Simplest just to always clear it.  Must be cleared
   // after the cache, as cleaning up the disk cache exposes some of the history
   // in the NetLog.
   if (g_browser_process->net_log())
     g_browser_process->net_log()->ClearAllPassivelyCapturedEvents();
 
-  removing_ = false;
+  set_removing(false);
   FOR_EACH_OBSERVER(Observer, observer_list_, OnBrowsingDataRemoverDone());
 
   // History requests aren't happy if you delete yourself from the callback.
   // As such, we do a delete later.
   MessageLoop::current()->DeleteSoon(FROM_HERE, this);
 }
 
 void BrowsingDataRemover::ClearedNetworkHistory() {
   waiting_for_clear_networking_history_ = false;
 
@@ skipping 164 matching lines @@
       NewRunnableMethod(
           this,
           &BrowsingDataRemover::NotifyAndDeleteIfDone));
 }
 
 void BrowsingDataRemover::OnWaitableEventSignaled(
     base::WaitableEvent* waitable_event) {
   waiting_for_clear_lso_data_ = false;
   NotifyAndDeleteIfDone();
 }