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

webkit/fileapi/local_file_stream_writer_unittest.cc

Index: webkit/fileapi/local_file_stream_writer_unittest.cc
diff --git a/webkit/fileapi/local_file_stream_writer_unittest.cc b/webkit/fileapi/local_file_stream_writer_unittest.cc
index d67a7daba9636779313d830431a612cddddee8cd..41c547e357a6ac1189e493f82cbc69f1c3d789c1 100644
--- a/webkit/fileapi/local_file_stream_writer_unittest.cc
+++ b/webkit/fileapi/local_file_stream_writer_unittest.cc
@@ -77,7 +77,7 @@ void NeverCalled(int unused) {
 }  // namespace
 
 TEST_F(LocalFileStreamWriterTest, Write) {
-  base::FilePath path = CreateFileWithContent("file_a", "");
+  base::FilePath path = CreateFileWithContent("file_a", std::string());
   scoped_ptr<LocalFileStreamWriter> writer(new LocalFileStreamWriter(path, 0));
   EXPECT_EQ(net::OK, WriteStringToWriter(writer.get(), "foo"));
   EXPECT_EQ(net::OK, WriteStringToWriter(writer.get(), "bar"));
@@ -126,7 +126,7 @@ TEST_F(LocalFileStreamWriterTest, CancelBeforeOperation) {
 }
 
 TEST_F(LocalFileStreamWriterTest, CancelAfterFinishedOperation) {
-  base::FilePath path = CreateFileWithContent("file_a", "");
+  base::FilePath path = CreateFileWithContent("file_a", std::string());
   scoped_ptr<LocalFileStreamWriter> writer(new LocalFileStreamWriter(path, 0));
   EXPECT_EQ(net::OK, WriteStringToWriter(writer.get(), "foo"));