Cleanup: Remove some redundant container clear() calls.

extensions/browser/extension_pref_value_map.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 "extensions/browser/extension_pref_value_map.h"
 
 #include "base/prefs/pref_value_map.h"
 #include "base/stl_util.h"
 #include "base/values.h"
 
@@ skipping 21 matching lines @@
 
 ExtensionPrefValueMap::ExtensionPrefValueMap() : destroyed_(false) {
 }
 
 ExtensionPrefValueMap::~ExtensionPrefValueMap() {
   if (!destroyed_) {
     NotifyOfDestruction();
     destroyed_ = true;
   }
   STLDeleteValues(&entries_);
-  entries_.clear();
 }
 
 void ExtensionPrefValueMap::Shutdown() {
   NotifyOfDestruction();
   destroyed_ = true;
 }
 
 void ExtensionPrefValueMap::SetExtensionPref(const std::string& ext_id,
                                              const std::string& key,
                                              ExtensionPrefsScope scope,
@@ skipping 341 matching lines @@
 
 void ExtensionPrefValueMap::NotifyPrefValueChanged(const std::string& key) {
   FOR_EACH_OBSERVER(ExtensionPrefValueMap::Observer, observers_,
                     OnPrefValueChanged(key));
 }
 
 void ExtensionPrefValueMap::NotifyOfDestruction() {
   FOR_EACH_OBSERVER(ExtensionPrefValueMap::Observer, observers_,
                     OnExtensionPrefValueMapDestruction());
 }