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

chrome/browser/net/chrome_network_delegate_unittest.cc

Index: chrome/browser/net/chrome_network_delegate_unittest.cc
diff --git a/chrome/browser/net/chrome_network_delegate_unittest.cc b/chrome/browser/net/chrome_network_delegate_unittest.cc
index f822195e31d53bbef3f25fe044313000b0a29a32..b5c81510d248f871d17df702a9ee9106170ee575 100644
--- a/chrome/browser/net/chrome_network_delegate_unittest.cc
+++ b/chrome/browser/net/chrome_network_delegate_unittest.cc
@@ -234,7 +234,7 @@ TEST_F(ChromeNetworkDelegateSafeSearchTest, SafeSearchOn) {
                        "q=goog&" + kBothParameters);
 
   // Test that another website is not affected, without parameters.
-  CheckAddedParameters("http://google.com/finance", "");
+  CheckAddedParameters("http://google.com/finance", std::string());
 
   // Test that another website is not affected, with parameters.
   CheckAddedParameters("http://google.com/finance?q=goog", "q=goog");
@@ -255,10 +255,10 @@ TEST_F(ChromeNetworkDelegateSafeSearchTest, SafeSearchOff) {
   SetDelegate(delegate.get());
 
   // Test the home page.
-  CheckAddedParameters("http://google.com/", "");
+  CheckAddedParameters("http://google.com/", std::string());
 
   // Test the search home page.
-  CheckAddedParameters("http://google.com/webhp", "");
+  CheckAddedParameters("http://google.com/webhp", std::string());
 
   // Test the home page with parameters.
   CheckAddedParameters("http://google.com/search?q=google",