WebUI Task manager: prevent to kill the wrong process or none

chrome/browser/task_manager/task_manager.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/task_manager/task_manager.h"
 
 #include "base/bind.h"
 #include "base/compiler_specific.h"
 #include "base/i18n/number_formatting.h"
 #include "base/i18n/rtl.h"
@@ skipping 107 matching lines @@
 
 void TaskManagerModel::RemoveObserver(TaskManagerModelObserver* observer) {
   observer_list_.RemoveObserver(observer);
 }
 
 int TaskManagerModel::GetResourceUniqueId(int index) const {
   CHECK_LT(index, ResourceCount());
   return resources_[index]->get_unique_id();
 }
 
+int TaskManagerModel::GetResourceIndexByUniqueId(const int unique_id) const {
+  for (int resource_index = 0; resource_index < ResourceCount();
+       ++resource_index) {
+    if (GetResourceUniqueId(resource_index) == unique_id)
+      return resource_index;
+  }
+  return -1;
+}
+
 string16 TaskManagerModel::GetResourceTitle(int index) const {
   CHECK_LT(index, ResourceCount());
   return resources_[index]->GetTitle();
 }
 
 string16 TaskManagerModel::GetResourceProfileName(int index) const {
   CHECK_LT(index, ResourceCount());
   return resources_[index]->GetProfileName();
 }
 
@@ skipping 1000 matching lines @@
     // Count the number of extensions with background pages (including
     // incognito).
     count += CountExtensionBackgroundPagesForProfile(profile);
     if (profile->HasOffTheRecordProfile()) {
       count += CountExtensionBackgroundPagesForProfile(
           profile->GetOffTheRecordProfile());
     }
   }
   return count;
 }