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diff --git a/base/debug/debugger.h b/base/debug/debugger.h
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+++ b/base/debug/debugger.h
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+// Copyright (c) 2010 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.
+
+// This is a cross platform interface for helper functions related to
+// debuggers.  You should use this to test if you're running under a debugger,
+// and if you would like to yield (breakpoint) into the debugger.
+
+#ifndef BASE_DEBUG_DEBUGGER_H
+#define BASE_DEBUG_DEBUGGER_H
+#pragma once
+
+namespace base {
+namespace debug {
+
+// Starts the registered system-wide JIT debugger to attach it to specified
+// process.
+bool SpawnDebuggerOnProcess(unsigned process_id);
+
+// Waits wait_seconds seconds for a debugger to attach to the current process.
+// When silent is false, an exception is thrown when a debugger is detected.
+bool WaitForDebugger(int wait_seconds, bool silent);
+
+// Returns true if the given process is being run under a debugger.
+//
+// On OS X, the underlying mechanism doesn't work when the sandbox is enabled.
+// To get around this, this function caches its value.
+//
+// WARNING: Because of this, on OS X, a call MUST be made to this function
+// BEFORE the sandbox is enabled.
+bool BeingDebugged();
+
+// Break into the debugger, assumes a debugger is present.
+void BreakDebugger();
+
+}  // namespace debug
+}  // namespace base
+
+#endif  // BASE_DEBUG_DEBUGGER_H