Fix recognizing FTP listings consisting of only one line.

net/ftp/ftp_directory_listing_buffer.cc

Index: net/ftp/ftp_directory_listing_buffer.cc
diff --git a/net/ftp/ftp_directory_listing_buffer.cc b/net/ftp/ftp_directory_listing_buffer.cc
index e41cb9ecb6d5dbe352f7f3d0d3abbecfff37d172..19483d02341295b92a00a8da1ef84efb2d01a475 100644
--- a/net/ftp/ftp_directory_listing_buffer.cc
+++ b/net/ftp/ftp_directory_listing_buffer.cc
@@ -70,7 +70,16 @@ int FtpDirectoryListingBuffer::ProcessRemainingData() {
   if (!buffer_.empty())
     return ERR_INVALID_RESPONSE;
 
-  return ParseLines();
+  rv = ParseLines();
+  if (rv != OK)
+    return rv;
+
+  rv = OnEndOfInput();
+  if (rv != OK)
+    return rv;
+
+  DCHECK(current_parser_);
+  return OK;
 }
 
 bool FtpDirectoryListingBuffer::EntryAvailable() const {
@@ -146,4 +155,24 @@ int FtpDirectoryListingBuffer::ParseLines() {
   return OK;
 }
 
+int FtpDirectoryListingBuffer::OnEndOfInput() {
+  ParserSet::iterator i = parsers_.begin();
+  while (i != parsers_.end()) {
+    if ((*i)->OnEndOfInput()) {
+      i++;
+    } else {
+      delete *i;
+      parsers_.erase(i++);
+    }
+  }
+
+  if (parsers_.size() != 1) {
+    current_parser_ = NULL;
+    return ERR_UNRECOGNIZED_FTP_DIRECTORY_LISTING_FORMAT;
+  }
+
+  current_parser_ = *parsers_.begin();
+  return OK;
+}
+
 }  // namespace net