Revert of [SharedArrayBuffer] Prevent SharedArrayBuffer being used in Web APIs

third_party/WebKit/Source/modules/webaudio/ScriptProcessorNode.cpp

 /*
  * Copyright (C) 2010, Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1.  Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 156 matching lines @@
 
   bool channels_are_good =
       (number_of_input_channels == number_of_input_channels_) &&
       (number_of_output_channels == number_of_output_channels_);
   DCHECK(channels_are_good);
   if (!channels_are_good)
     return;
 
   for (unsigned i = 0; i < number_of_input_channels; ++i)
     internal_input_bus_->SetChannelMemory(
-        i,
-        input_buffer->getChannelData(i).View()->Data() +
-            buffer_read_write_index_,
+        i, input_buffer->getChannelData(i)->Data() + buffer_read_write_index_,
         frames_to_process);
 
   if (number_of_input_channels)
     internal_input_bus_->CopyFrom(*input_bus);
 
   // Copy from the output buffer to the output.
-  for (unsigned i = 0; i < number_of_output_channels; ++i) {
+  for (unsigned i = 0; i < number_of_output_channels; ++i)
     memcpy(output_bus->Channel(i)->MutableData(),
-           output_buffer->getChannelData(i).View()->Data() +
-               buffer_read_write_index_,
+           output_buffer->getChannelData(i)->Data() + buffer_read_write_index_,
            sizeof(float) * frames_to_process);
-  }
 
   // Update the buffering index.
   buffer_read_write_index_ =
       (buffer_read_write_index_ + frames_to_process) % BufferSize();
 
   // m_bufferReadWriteIndex will wrap back around to 0 when the current input
   // and output buffers are full.
   // When this happens, fire an event and swap buffers.
   if (!buffer_read_write_index_) {
     // Avoid building up requests on the main thread to fire process events when
@@ skipping 290 matching lines @@
 
   // If |onaudioprocess| event handler is defined, the node should not be
   // GCed even if it is out of scope.
   if (HasEventListeners(EventTypeNames::audioprocess))
     return true;
 
   return false;
 }
 
 }  // namespace blink