Fix (unexpected) use of uninitialized boolean in parsing of Content-Type.

chrome/browser/extensions/api/declarative_webrequest/webrequest_condition_attribute.cc

 // Copyright (c) 2012 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/extensions/api/declarative_webrequest/webrequest_condition_attribute.h"
 
 #include <algorithm>
 
 #include "base/logging.h"
 #include "base/stringprintf.h"
@@ skipping 180 matching lines @@
 
 bool WebRequestConditionAttributeContentType::IsFulfilled(
     const WebRequestRule::RequestData& request_data) {
   if (!(request_data.stage & GetStages()))
     return false;
   std::string content_type;
   request_data.original_response_headers->GetNormalizedHeader(
       net::HttpRequestHeaders::kContentType, &content_type);
   std::string mime_type;
   std::string charset;
-  bool had_charset;
+  bool had_charset = false;
   net::HttpUtil::ParseContentType(
       content_type, &mime_type, &charset, &had_charset, NULL);
 
   return std::find(content_types_.begin(), content_types_.end(),
                    mime_type) != content_types_.end();
 }
 
 WebRequestConditionAttribute::Type
 WebRequestConditionAttributeContentType::GetType() const {
   return CONDITION_CONTENT_TYPE;
 }
 
 }  // namespace extensions