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diff --git a/sandbox/src/sync_interception.cc b/sandbox/src/sync_interception.cc
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+// Copyright 2008, 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:
+//
+//    * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//    * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//    * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#include "sandbox/src/sync_interception.h"
+
+#include "sandbox/src/crosscall_client.h"
+#include "sandbox/src/ipc_tags.h"
+#include "sandbox/src/policy_params.h"
+#include "sandbox/src/policy_target.h"
+#include "sandbox/src/sandbox_factory.h"
+#include "sandbox/src/sandbox_nt_util.h"
+#include "sandbox/src/sharedmem_ipc_client.h"
+#include "sandbox/src/target_services.h"
+
+namespace sandbox {
+
+HANDLE WINAPI TargetCreateEventW(CreateEventWFunction orig_CreateEvent,
+                                 LPSECURITY_ATTRIBUTES security_attributes,
+                                 BOOL manual_reset, BOOL initial_state,
+                                 LPCWSTR name) {
+  // Check if the process can create it first.
+  HANDLE handle = orig_CreateEvent(security_attributes, manual_reset,
+                                   initial_state, name);
+  DWORD original_error = ::GetLastError();
+  if (NULL != handle)
+    return handle;
+
+  // We don't trust that the IPC can work this early.
+  if (!SandboxFactory::GetTargetServices()->GetState()->InitCalled())
+    return NULL;
+
+  do {
+    if (security_attributes)
+      break;
+
+    void* memory = GetGlobalIPCMemory();
+    if (NULL == memory)
+      break;
+
+    CountedParameterSet<NameBased> params;
+    params[NameBased::NAME] = ParamPickerMake(name);
+
+    if (!QueryBroker(IPC_CREATEEVENT_TAG, params.GetBase()))
+      break;
+
+    SharedMemIPCClient ipc(memory);
+    CrossCallReturn answer = {0};
+    ResultCode code = CrossCall(ipc, IPC_CREATEEVENT_TAG, name, manual_reset,
+                                initial_state, &answer);
+
+    if (SBOX_ALL_OK != code)
+      break;
+
+    if (NULL == answer.handle)
+      break;
+
+    return answer.handle;
+  } while (false);
+
+  ::SetLastError(original_error);
+  return NULL;
+}
+
+// Interception of OpenEventW on the child process.
+// It should never be called directly
+HANDLE WINAPI TargetOpenEventW(OpenEventWFunction orig_OpenEvent,
+                               ACCESS_MASK desired_access, BOOL inherit_handle,
+                               LPCWSTR name) {
+  // Check if the process can open it first.
+  HANDLE handle = orig_OpenEvent(desired_access, inherit_handle, name);
+  DWORD original_error = ::GetLastError();
+  if (NULL != handle)
+    return handle;
+
+  // We don't trust that the IPC can work this early.
+  if (!SandboxFactory::GetTargetServices()->GetState()->InitCalled())
+    return NULL;
+
+  do {
+    void* memory = GetGlobalIPCMemory();
+    if (NULL == memory)
+      break;
+
+    uint32 inherit_handle_ipc = inherit_handle;
+    CountedParameterSet<OpenEventParams> params;
+    params[OpenEventParams::NAME] = ParamPickerMake(name);
+    params[OpenEventParams::ACCESS] = ParamPickerMake(desired_access);
+
+    if (!QueryBroker(IPC_OPENEVENT_TAG, params.GetBase()))
+      break;
+
+    SharedMemIPCClient ipc(memory);
+    CrossCallReturn answer = {0};
+    ResultCode code = CrossCall(ipc, IPC_OPENEVENT_TAG, name, desired_access,
+                                inherit_handle_ipc, &answer);
+
+    if (SBOX_ALL_OK != code)
+      break;
+
+    if (NULL == answer.handle)
+      break;
+
+    return answer.handle;
+  } while (false);
+
+  ::SetLastError(original_error);
+  return NULL;
+}
+
+}  // namespace sandbox