Rewrite std::string("") to std::string(), Linux edition.

chrome/browser/extensions/api/declarative_content/content_condition.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_content/content_condition.h"
 
 #include "base/stringprintf.h"
 #include "base/values.h"
 #include "chrome/browser/extensions/api/declarative_content/content_constants.h"
 #include "extensions/common/matcher/url_matcher_factory.h"
@@ skipping 111 matching lines @@
       *error = base::StringPrintf(kUnknownConditionAttribute,
                                   condition_attribute_name.c_str());
     }
     if (!error->empty())
       return scoped_ptr<ContentCondition>(NULL);
   }
 
   if (!url_matcher_condition_set) {
     URLMatcherConditionSet::Conditions url_matcher_conditions;
     url_matcher_conditions.insert(
-        url_matcher_condition_factory->CreateHostPrefixCondition(""));
+        url_matcher_condition_factory->CreateHostPrefixCondition(
+            std::string()));
     url_matcher_condition_set =
         new URLMatcherConditionSet(++g_next_id, url_matcher_conditions);
   }
   return scoped_ptr<ContentCondition>(
       new ContentCondition(url_matcher_condition_set, css_rules));
 }
 
 }  // namespace extensions