Revert of [NaCl SDK] nacl_io: Add support for basic socketpairs.

native_client_sdk/src/libraries/nacl_io/socket/unix_event_emitter.cc

Index: native_client_sdk/src/libraries/nacl_io/socket/unix_event_emitter.cc
diff --git a/native_client_sdk/src/libraries/nacl_io/socket/unix_event_emitter.cc b/native_client_sdk/src/libraries/nacl_io/socket/unix_event_emitter.cc
deleted file mode 100644
index 1c3a523bbf8ba0a537be46332f88b84616bc03c5..0000000000000000000000000000000000000000
--- a/native_client_sdk/src/libraries/nacl_io/socket/unix_event_emitter.cc
+++ /dev/null
@@ -1,102 +0,0 @@
-// Copyright 2015 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 "nacl_io/socket/unix_event_emitter.h"
-
-#include <stdlib.h>
-
-#include "nacl_io/fifo_char.h"
-#include "sdk_util/scoped_ref.h"
-
-namespace nacl_io {
-
-class UnixChildEventEmitter;
-class UnixMasterEventEmitter;
-
-typedef sdk_util::ScopedRef<UnixMasterEventEmitter>
-    ScopedUnixMasterEventEmitter;
-
-class UnixMasterEventEmitter : public UnixEventEmitter {
- public:
-  explicit UnixMasterEventEmitter(size_t size)
-      : in_fifo_(size),
-        out_fifo_(size),
-        child_emitter_created_(false),
-        child_emitter_(NULL) {
-    UpdateStatus_Locked();
-  }
-
-  virtual ScopedUnixEventEmitter GetPeerEmitter();
-
- protected:
-  virtual FIFOChar* in_fifoc() { return &in_fifo_; }
-  virtual FIFOChar* out_fifoc() { return &out_fifo_; }
-  virtual const sdk_util::SimpleLock& GetFifoLock() { return fifo_lock_; }
-
- private:
-  FIFOChar in_fifo_;
-  FIFOChar out_fifo_;
-  sdk_util::SimpleLock fifo_lock_;
-  bool child_emitter_created_;
-  UnixChildEventEmitter* child_emitter_;
-
-  friend class UnixChildEventEmitter;
-};
-
-class UnixChildEventEmitter : public UnixEventEmitter {
- public:
-  explicit UnixChildEventEmitter(UnixMasterEventEmitter* parent)
-      : parent_emitter_(parent) {
-    UpdateStatus_Locked();
-  }
-  virtual ScopedUnixEventEmitter GetPeerEmitter() { return parent_emitter_; }
-
- protected:
-  virtual void Destroy() { parent_emitter_->child_emitter_ = NULL; }
-
-  virtual FIFOChar* in_fifoc() { return parent_emitter_->out_fifoc(); }
-  virtual FIFOChar* out_fifoc() { return parent_emitter_->in_fifoc(); }
-  virtual const sdk_util::SimpleLock& GetFifoLock() {
-    return parent_emitter_->GetFifoLock();
-  }
-
- private:
-  ScopedUnixMasterEventEmitter parent_emitter_;
-};
-
-ScopedUnixEventEmitter UnixMasterEventEmitter::GetPeerEmitter() {
-  if (!child_emitter_created_) {
-    child_emitter_created_ = true;
-    child_emitter_ = new UnixChildEventEmitter(this);
-  }
-  return sdk_util::ScopedRef<UnixChildEventEmitter>(child_emitter_);
-}
-
-uint32_t UnixEventEmitter::ReadIn_Locked(char* data, uint32_t len) {
-  AUTO_LOCK(GetFifoLock());
-  uint32_t count = in_fifoc()->Read(data, len);
-  ScopedUnixEventEmitter peer = GetPeerEmitter();
-  if (peer) {
-    peer->UpdateStatus_Locked();
-  }
-  UpdateStatus_Locked();
-  return count;
-}
-
-uint32_t UnixEventEmitter::WriteOut_Locked(const char* data, uint32_t len) {
-  AUTO_LOCK(GetFifoLock());
-  uint32_t count = out_fifoc()->Write(data, len);
-  ScopedUnixEventEmitter peer = GetPeerEmitter();
-  if (peer) {
-    peer->UpdateStatus_Locked();
-  }
-  UpdateStatus_Locked();
-  return count;
-}
-
-ScopedUnixEventEmitter UnixEventEmitter::MakeUnixEventEmitter(size_t size) {
-  return ScopedUnixEventEmitter(new UnixMasterEventEmitter(size));
-}
-
-}  // namespace nacl_io