Coverity: Initialize member variables.

chrome/common/content_settings.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/common/content_settings.h"
 
 ContentSetting IntToContentSetting(int content_setting) {
   return ((content_setting < 0) ||
           (content_setting >= CONTENT_SETTING_NUM_SETTINGS)) ?
       CONTENT_SETTING_DEFAULT : static_cast<ContentSetting>(content_setting);
 }
 
 ContentSettingPatternSource::ContentSettingPatternSource(
     const ContentSettingsPattern& primary_pattern,
     const ContentSettingsPattern& secondary_pattern,
     ContentSetting setting,
     const std::string& source,
     bool incognito)
     : primary_pattern(primary_pattern),
       secondary_pattern(secondary_pattern),
       setting(setting),
       source(source),
       incognito(incognito) {}
 
-ContentSettingPatternSource::ContentSettingPatternSource() {}
+ContentSettingPatternSource::ContentSettingPatternSource()
+    : setting(CONTENT_SETTING_DEFAULT), incognito(false) {
+}
 
 RendererContentSettingRules::RendererContentSettingRules() {}
 
 RendererContentSettingRules::~RendererContentSettingRules() {}