Add removeAll method to sets and maps and use them

Source/core/inspector/PageRuntimeAgent.cpp

 /*
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 133 matching lines @@
 void PageRuntimeAgent::frameWindowDiscarded(DOMWindow* window)
 {
     Vector<NewScriptState*> scriptStatesToRemove;
     for (ScriptStateToId::iterator it = m_scriptStateToId.begin(); it != m_scriptStateToId.end(); ++it) {
         NewScriptState* scriptState = it->key;
         if (window == scriptState->domWindow()) {
             scriptStatesToRemove.append(scriptState);
             m_frontend->executionContextDestroyed(it->value);
         }
     }
-    for (size_t i = 0; i < scriptStatesToRemove.size(); i++)
-        m_scriptStateToId.remove(scriptStatesToRemove[i]);
+    m_scriptStateToId.removeAll(scriptStatesToRemove);
 }
 
 } // namespace WebCore