Make HidConnection::Read reentrancy safe

device/hid/hid_connection.cc

 // Copyright (c) 2014 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 "device/hid/hid_connection.h"
 
 #include <algorithm>
 
 #include "components/device_event_log/device_event_log.h"
 
@@ skipping 152 matching lines @@
   }
   if (IsReportIdProtected(report_id)) {
     HID_LOG(USER) << "Attempt to set a protected feature report.";
     callback.Run(false);
     return;
   }
 
   PlatformSendFeatureReport(buffer, size, callback);
 }
 
-bool HidConnection::CompleteRead(scoped_refptr<net::IOBuffer> buffer,
-                                 size_t size,
-                                 const ReadCallback& callback) {
-  DCHECK_GE(size, 1u);
-  uint8_t report_id = buffer->data()[0];
-  if (IsReportIdProtected(report_id)) {
-    HID_LOG(EVENT) << "Filtered a protected input report.";
-    return false;
-  }
-
-  callback.Run(true, buffer, size);
-  return true;
-}
-
 bool HidConnection::IsReportIdProtected(uint8_t report_id) {
   HidCollectionInfo collection_info;
   if (FindCollectionByReportId(device_info_->collections(), report_id,
                                &collection_info)) {
     return collection_info.usage.IsProtected();
   }
 
   return has_protected_collection();
 }
 
 PendingHidReport::PendingHidReport() {}
 
 PendingHidReport::PendingHidReport(const PendingHidReport& other) = default;
 
 PendingHidReport::~PendingHidReport() {}
 
 PendingHidRead::PendingHidRead() {}
 
 PendingHidRead::PendingHidRead(const PendingHidRead& other) = default;
 
 PendingHidRead::~PendingHidRead() {}
 
 }  // namespace device