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

net/spdy/spdy_stream_test_util.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 "net/spdy/spdy_stream_test_util.h"
 
 #include "net/base/completion_callback.h"
 #include "net/spdy/spdy_stream.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
@@ skipping 83 matching lines @@
 
 int StreamDelegateBase::WaitForClose() {
   int result = callback_.WaitForResult();
   EXPECT_TRUE(!stream_.get());
   return result;
 }
 
 std::string StreamDelegateBase::GetResponseHeaderValue(
     const std::string& name) const {
   SpdyHeaderBlock::const_iterator it = response_.find(name);
-  return (it == response_.end()) ? "" : it->second;
+  return (it == response_.end()) ? std::string() : it->second;
 }
 
 StreamDelegateSendImmediate::StreamDelegateSendImmediate(
     const scoped_refptr<SpdyStream>& stream,
     scoped_ptr<SpdyHeaderBlock> headers,
     base::StringPiece data)
     : StreamDelegateBase(stream),
       headers_(headers.Pass()),
       data_(data) {}
 
@@ skipping 59 matching lines @@
   }
 
   // Check if the entire body data has been sent.
   *eof = (buf_->BytesRemaining() == 0);
   return status;
 }
 
 } // namespace test
 
 } // namespace net