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diff --git a/chrome/common/launchd_mac.h b/chrome/common/launchd_mac.h
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+// Copyright (c) 2011 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.
+
+#ifndef CHROME_COMMON_LAUNCHD_MAC_H_
+#define CHROME_COMMON_LAUNCHD_MAC_H_
+
+#include <CoreFoundation/CoreFoundation.h>
+
+#include "base/basictypes.h"
+#include "base/singleton.h"
+
+class Launchd {
+ public:
+  enum Type {
+    Agent,  // LaunchAgent
+    Daemon  // LaunchDaemon
+  };
+
+  // Domains map to NSSearchPathDomainMask so Foundation does not need to be
+  // included.
+  enum Domain {
+    User = 1,  // ~/Library/Launch*
+    Local = 2,  // /Library/Launch*
+    Network = 4,  // /Network/Library/Launch*
+    System = 8  // /System/Library/Launch*
+  };
+
+  // TODO(dmaclach): Get rid of this pseudo singleton, and inject it
+  // appropriately wherever it is used.
+  // http://crbug.com/76925
+  static Launchd* GetInstance();
+
+  virtual ~Launchd();
+
+  // Return a dictionary with the launchd export settings.
+  virtual CFDictionaryRef CopyExports();
+
+  // Return a dictionary with the launchd entries for job labeled |name|.
+  virtual CFDictionaryRef CopyJobDictionary(CFStringRef label);
+
+  // Return a dictionary for launchd process.
+  virtual CFDictionaryRef CopyDictionaryByCheckingIn(CFErrorRef* error);
+
+  // Remove a launchd process from launchd.
+  virtual bool RemoveJob(CFStringRef label, CFErrorRef* error);
+
+  // Used by a process controlled by launchd to restart itself.
+  // |session_type| can be "Aqua", "LoginWindow", "Background", "StandardIO" or
+  // "System".
+  // RestartLaunchdJob starts up a separate process to tell launchd to
+  // send this process a SIGTERM. This call will return, but a SIGTERM will be
+  // received shortly.
+  virtual bool RestartJob(Domain domain,
+                          Type type,
+                          CFStringRef name,
+                          CFStringRef session_type);
+
+  // Read a launchd plist from disk.
+  // |name| should not have an extension.
+  virtual CFMutableDictionaryRef CreatePlistFromFile(Domain domain,
+                                                     Type type,
+                                                     CFStringRef name);
+  // Write a launchd plist to disk.
+  // |name| should not have an extension.
+  virtual bool WritePlistToFile(Domain domain,
+                                Type type,
+                                CFStringRef name,
+                                CFDictionaryRef dict);
+
+  // Delete a launchd plist.
+  // |name| should not have an extension.
+  virtual bool DeletePlist(Domain domain, Type type, CFStringRef name);
+
+  // TODO(dmaclach): remove this once http://crbug.com/76925 is fixed.
+  // Scaffolding for doing unittests with our singleton.
+  static void SetInstance(Launchd* instance);
+  class ScopedInstance {
+   public:
+    explicit ScopedInstance(Launchd* instance) {
+      Launchd::SetInstance(instance);
+    }
+    ~ScopedInstance() {
+      Launchd::SetInstance(NULL);
+    }
+  };
+
+ protected:
+  Launchd() { }
+
+ private:
+  // TODO(dmaclach): remove this once http://crbug.com/76925 is fixed.
+  // Scaffolding for doing unittests with our singleton.
+  friend struct DefaultSingletonTraits<Launchd>;
+  static Launchd* g_instance_;
+
+  DISALLOW_COPY_AND_ASSIGN(Launchd);
+};
+
+#endif  // CHROME_COMMON_LAUNCHD_MAC_H_