Revert r47599 because it breaks PDF viewing on windows....

webkit/glue/multipart_response_delegate.cc

 // Copyright (c) 2006-2008 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 "webkit/glue/multipart_response_delegate.h"
 
 #include "base/logging.h"
 #include "base/string_util.h"
 #include "net/base/net_util.h"
 #include "net/http/http_util.h"
@@ skipping 131 matching lines @@
     // We can now throw out data up through the boundary
     int offset = PushOverLine(data_, boundary_end_pos);
     data_ = data_.substr(boundary_end_pos + offset);
 
     // Ok, back to parsing headers
     if (!ParseHeaders()) {
       processing_headers_ = true;
       break;
     }
   }
-
-  // At this point, we should send over any data we have, but keep enough data
-  // buffered to handle a boundary that may have been truncated.
-  if (!processing_headers_ && data_.length() > boundary_.length()) {
-    // If the last character is a new line character, go ahead and just send
-    // everything we have buffered.  This matches an optimization in Gecko.
-    int send_length = data_.length() - boundary_.length();
-    if (data_[data_.length() - 1] == '\n')
-      send_length = data_.length();
-    client_->didReceiveData(loader_, data_.data(), send_length);
-    data_ = data_.substr(send_length);
-  }
 }
 
 void MultipartResponseDelegate::OnCompletedRequest() {
   // If we have any pending data and we're not in a header, go ahead and send
   // it to WebCore.
   if (!processing_headers_ && !data_.empty()) {
     client_->didReceiveData(loader_,
                             data_.data(),
                             static_cast<int>(data_.length()));
   }
@@ skipping 177 matching lines @@
                            byte_range_upper_bound_characters);
 
   if (!StringToInt(byte_range_lower_bound, content_range_lower_bound))
     return false;
   if (!StringToInt(byte_range_upper_bound, content_range_upper_bound))
     return false;
   return true;
 }
 
 }  // namespace webkit_glue