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

remoting/host/register_support_host_request_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 "remoting/host/register_support_host_request.h"
 
 #include "base/bind.h"
 #include "base/memory/ref_counted.h"
 #include "base/message_loop.h"
 #include "base/observer_list.h"
@@ skipping 81 matching lines @@
   EXPECT_CALL(signal_strategy_, SendStanzaPtr(NotNull()))
       .WillOnce(DoAll(SaveArg<0>(&sent_iq), Return(true)));
 
   request->OnSignalStrategyStateChange(SignalStrategy::CONNECTED);
   message_loop_.RunUntilIdle();
 
   // Verify format of the query.
   scoped_ptr<XmlElement> stanza(sent_iq);
   ASSERT_TRUE(stanza != NULL);
 
-  EXPECT_EQ(stanza->Attr(buzz::QName("", "to")),
+  EXPECT_EQ(stanza->Attr(buzz::QName(std::string(), "to")),
             std::string(kTestBotJid));
-  EXPECT_EQ(stanza->Attr(buzz::QName("", "type")), "set");
+  EXPECT_EQ(stanza->Attr(buzz::QName(std::string(), "type")), "set");
 
   EXPECT_EQ(QName(kChromotingXmlNamespace, "register-support-host"),
             stanza->FirstElement()->Name());
 
   QName signature_tag(kChromotingXmlNamespace, "signature");
   XmlElement* signature = stanza->FirstElement()->FirstNamed(signature_tag);
   ASSERT_TRUE(signature != NULL);
   EXPECT_TRUE(stanza->NextNamed(signature_tag) == NULL);
 
   std::string time_str =
       signature->Attr(QName(kChromotingXmlNamespace, "time"));
   int64 time;
   EXPECT_TRUE(base::StringToInt64(time_str, &time));
   int64 now = static_cast<int64>(base::Time::Now().ToDoubleT());
   EXPECT_LE(start_time, time);
   EXPECT_GE(now, time);
 
   scoped_refptr<RsaKeyPair> key_pair = RsaKeyPair::FromString(kTestRsaKeyPair);
   ASSERT_TRUE(key_pair);
 
   std::string expected_signature =
       key_pair->SignMessage(std::string(kTestJid) + ' ' + time_str);
   EXPECT_EQ(expected_signature, signature->BodyText());
 
   // Generate response and verify that callback is called.
   EXPECT_CALL(callback_, OnResponse(true, kSupportId,
                                     base::TimeDelta::FromSeconds(300)));
 
   scoped_ptr<XmlElement> response(new XmlElement(buzz::QN_IQ));
-  response->AddAttr(QName("", "from"), kTestBotJid);
-  response->AddAttr(QName("", "type"), "result");
-  response->AddAttr(QName("", "id"), kStanzaId);
+  response->AddAttr(QName(std::string(), "from"), kTestBotJid);
+  response->AddAttr(QName(std::string(), "type"), "result");
+  response->AddAttr(QName(std::string(), "id"), kStanzaId);
 
   XmlElement* result = new XmlElement(
       QName(kChromotingXmlNamespace, "register-support-host-result"));
   response->AddElement(result);
 
   XmlElement* support_id = new XmlElement(
       QName(kChromotingXmlNamespace, "support-id"));
   support_id->AddText(kSupportId);
   result->AddElement(support_id);
 
   XmlElement* support_id_lifetime = new XmlElement(
       QName(kChromotingXmlNamespace, "support-id-lifetime"));
   support_id_lifetime->AddText(kSupportIdLifetime);
   result->AddElement(support_id_lifetime);
 
   int consumed = 0;
   ObserverListBase<SignalStrategy::Listener>::Iterator it(
       signal_strategy_listeners_);
   SignalStrategy::Listener* listener;
   while ((listener = it.GetNext()) != NULL) {
     if (listener->OnSignalStrategyIncomingStanza(response.get()))
       consumed++;
   }
   EXPECT_EQ(1, consumed);
 
   message_loop_.RunUntilIdle();
 }
 
 }  // namespace remoting