Don't create a new profile when cleaning up stale ephemeral profiles.

components/search_engines/template_url_service.cc

 // Copyright 2014 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 "components/search_engines/template_url_service.h"
 
 #include <algorithm>
 #include <utility>
 
 #include "base/auto_reset.h"
@@ skipping 788 matching lines @@
   if (client_)
     client_->Shutdown();
   // This check has to be done at Shutdown() instead of in the dtor to ensure
   // that no clients of KeywordWebDataService are holding ptrs to it after the
   // first phase of the KeyedService Shutdown() process.
   if (load_handle_) {
     DCHECK(web_data_service_.get());
     web_data_service_->CancelRequest(load_handle_);
   }
   web_data_service_ = NULL;
+
+  // Notify observers so they can unregister themselves.
+  // TODO(bauerb): Observers shouldn't outlive this class; see
+  // https://crbug.com/483528.
+  on_loaded_callbacks_.Notify();
 }
 
 syncer::SyncDataList TemplateURLService::GetAllSyncData(
     syncer::ModelType type) const {
   DCHECK_EQ(syncer::SEARCH_ENGINES, type);
 
   syncer::SyncDataList current_data;
   for (TemplateURLVector::const_iterator iter = template_urls_.begin();
       iter != template_urls_.end(); ++iter) {
     // We don't sync keywords managed by policy.
@@ skipping 1464 matching lines @@
 
   if (most_recently_intalled_default) {
     base::AutoReset<DefaultSearchChangeOrigin> change_origin(
         &dsp_change_origin_, DSP_CHANGE_OVERRIDE_SETTINGS_EXTENSION);
     default_search_manager_.SetExtensionControlledDefaultSearchEngine(
         most_recently_intalled_default->data());
   } else {
     default_search_manager_.ClearExtensionControlledDefaultSearchEngine();
   }
 }