Revert of Reland #2 "ipc: Add a new field num_brokered_attachments to the message header."

content/browser/loader/async_resource_handler.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 "content/browser/loader/async_resource_handler.h"
 
 #include <algorithm>
 #include <vector>
 
 #include "base/command_line.h"
@@ skipping 311 matching lines @@
         GetRequestID(), handle, size, filter->peer_pid()));
     sent_first_data_msg_ = true;
   }
 
   int data_offset = buffer_->GetLastAllocationOffset();
 
   int64_t current_transfer_size = request()->GetTotalReceivedBytes();
   int encoded_data_length = current_transfer_size - reported_transfer_size_;
   reported_transfer_size_ = current_transfer_size;
 
-  // TODO(erikchen): Remove me after finished debugging for
-  // http://crbug.com/527588.
-  // The data offset can't exceed the size of the buffer.
-  CHECK_LE(data_offset, kBufferSize);
-
   filter->Send(new ResourceMsg_DataReceived(
       GetRequestID(), data_offset, bytes_read, encoded_data_length));
   ++pending_data_count_;
 
   if (!buffer_->CanAllocate()) {
     *defer = did_defer_ = true;
     OnDefer();
   }
 
   return true;
@@ skipping 88 matching lines @@
     request()->LogUnblocked();
     controller()->Resume();
   }
 }
 
 void AsyncResourceHandler::OnDefer() {
   request()->LogBlockedBy("AsyncResourceHandler");
 }
 
 }  // namespace content