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

remoting/jingle_glue/iq_sender_unittest.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 "base/bind.h"
 #include "base/memory/ref_counted.h"
 #include "base/message_loop.h"
 #include "base/stringprintf.h"
 #include "remoting/jingle_glue/iq_sender.h"
 #include "remoting/jingle_glue/mock_objects.h"
@@ skipping 73 matching lines @@
   MockCallback callback_;
   scoped_ptr<IqRequest> request_;
 };
 
 TEST_F(IqSenderTest, SendIq) {
   ASSERT_NO_FATAL_FAILURE({
     SendTestMessage();
   });
 
   scoped_ptr<XmlElement> response(new XmlElement(buzz::QN_IQ));
-  response->AddAttr(QName("", "type"), "result");
-  response->AddAttr(QName("", "id"), kStanzaId);
-  response->AddAttr(QName("", "from"), kTo);
+  response->AddAttr(QName(std::string(), "type"), "result");
+  response->AddAttr(QName(std::string(), "id"), kStanzaId);
+  response->AddAttr(QName(std::string(), "from"), kTo);
 
   XmlElement* result = new XmlElement(
       QName("test:namespace", "response-body"));
   response->AddElement(result);
 
   EXPECT_TRUE(sender_->OnSignalStrategyIncomingStanza(response.get()));
 
   EXPECT_CALL(callback_, OnReply(request_.get(), XmlEq(response.get())));
   message_loop_.RunUntilIdle();
 }
 
 TEST_F(IqSenderTest, Timeout) {
   ASSERT_NO_FATAL_FAILURE({
     SendTestMessage();
   });
 
   request_->SetTimeout(base::TimeDelta::FromMilliseconds(2));
 
   EXPECT_CALL(callback_, OnReply(request_.get(), NULL))
       .WillOnce(InvokeWithoutArgs(&message_loop_, &MessageLoop::Quit));
   message_loop_.Run();
 }
 
 TEST_F(IqSenderTest, InvalidFrom) {
   ASSERT_NO_FATAL_FAILURE({
     SendTestMessage();
   });
 
   scoped_ptr<XmlElement> response(new XmlElement(buzz::QN_IQ));
-  response->AddAttr(QName("", "type"), "result");
-  response->AddAttr(QName("", "id"), kStanzaId);
-  response->AddAttr(QName("", "from"), "different_user@domain.com");
+  response->AddAttr(QName(std::string(), "type"), "result");
+  response->AddAttr(QName(std::string(), "id"), kStanzaId);
+  response->AddAttr(QName(std::string(), "from"), "different_user@domain.com");
 
   XmlElement* result = new XmlElement(
       QName("test:namespace", "response-body"));
   response->AddElement(result);
 
   EXPECT_CALL(callback_, OnReply(_, _))
       .Times(0);
   EXPECT_FALSE(sender_->OnSignalStrategyIncomingStanza(response.get()));
   message_loop_.RunUntilIdle();
 }
 
 TEST_F(IqSenderTest, IdMatchingHack) {
   ASSERT_NO_FATAL_FAILURE({
     SendTestMessage();
   });
 
   scoped_ptr<XmlElement> response(new XmlElement(buzz::QN_IQ));
-  response->AddAttr(QName("", "type"), "result");
-  response->AddAttr(QName("", "id"), "DIFFERENT_ID");
-  response->AddAttr(QName("", "from"), kTo);
+  response->AddAttr(QName(std::string(), "type"), "result");
+  response->AddAttr(QName(std::string(), "id"), "DIFFERENT_ID");
+  response->AddAttr(QName(std::string(), "from"), kTo);
 
   XmlElement* result = new XmlElement(
       QName("test:namespace", "response-body"));
   response->AddElement(result);
 
   EXPECT_TRUE(sender_->OnSignalStrategyIncomingStanza(response.get()));
 
   EXPECT_CALL(callback_, OnReply(request_.get(), XmlEq(response.get())));
   message_loop_.RunUntilIdle();
 }
 
 }  // namespace remoting