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

net/base/sdch_filter_unittest.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 <limits.h>
 
 #include <algorithm>
 #include <string>
 #include <vector>
 
@@ skipping 1328 matching lines @@
 
   // Rely on the slash at the end of the restriction.
   EXPECT_TRUE(PathMatch("/search/something", "/search/"));
   EXPECT_TRUE(PathMatch("/search/s", "/search/"));
   EXPECT_TRUE(PathMatch("/search/other", "/search/"));
   EXPECT_TRUE(PathMatch("/search/something", "/search/"));
 
   // Make sure less that sufficient prefix match is false.
   EXPECT_FALSE(PathMatch("/sear", "/search"));
   EXPECT_FALSE(PathMatch("/", "/search"));
-  EXPECT_FALSE(PathMatch("", "/search"));
+  EXPECT_FALSE(PathMatch(std::string(), "/search"));
 
   // Add examples with several levels of direcories in the restriction.
   EXPECT_FALSE(PathMatch("/search/something", "search/s"));
   EXPECT_FALSE(PathMatch("/search/", "/search/s"));
 
   // Make sure adding characters to path will also fail.
   EXPECT_FALSE(PathMatch("/searching", "/search/"));
   EXPECT_FALSE(PathMatch("/searching", "/search"));
 
   // Make sure we're case sensitive.
@@ skipping 24 matching lines @@
   sdch_manager_->SetAllowLatencyExperiment(url, false);
   EXPECT_FALSE(sdch_manager_->AllowLatencyExperiment(url));
   EXPECT_TRUE(sdch_manager_->AllowLatencyExperiment(url2));
 
   sdch_manager_->SetAllowLatencyExperiment(url2, false);
   EXPECT_FALSE(sdch_manager_->AllowLatencyExperiment(url));
   EXPECT_FALSE(sdch_manager_->AllowLatencyExperiment(url2));
 }
 
 }  // namespace net