diff -r 000000000000 -r 6474c204b198 xpcom/base/nsCycleCollector.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/xpcom/base/nsCycleCollector.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,82 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef nsCycleCollector_h__
+#define nsCycleCollector_h__
+
+class nsICycleCollectorListener;
+class nsISupports;
+
+#include "nsError.h"
+#include "nsID.h"
+
+namespace mozilla {
+
+class CycleCollectedJSRuntime;
+
+// See the comments in nsContentUtils.h for explanations of these functions.
+typedef void* (*DeferredFinalizeAppendFunction)(void* pointers, void* thing);
+typedef bool (*DeferredFinalizeFunction)(uint32_t slice, void* data);
+
+}
+
+bool nsCycleCollector_init();
+
+void nsCycleCollector_startup();
+
+typedef void (*CC_BeforeUnlinkCallback)(void);
+void nsCycleCollector_setBeforeUnlinkCallback(CC_BeforeUnlinkCallback aCB);
+
+typedef void (*CC_ForgetSkippableCallback)(void);
+void nsCycleCollector_setForgetSkippableCallback(CC_ForgetSkippableCallback aCB);
+
+void nsCycleCollector_forgetSkippable(bool aRemoveChildlessNodes = false,
+                                      bool aAsyncSnowWhiteFreeing = false);
+
+void nsCycleCollector_prepareForGarbageCollection();
+
+void nsCycleCollector_dispatchDeferredDeletion(bool aContinuation = false);
+bool nsCycleCollector_doDeferredDeletion();
+
+void nsCycleCollector_collect(nsICycleCollectorListener *aManualListener);
+
+// If aSliceTime is negative, the CC will run to completion.  If aSliceTime
+// is 0, only a minimum quantum of work will be done.  Otherwise, aSliceTime
+// will be used as the time budget for the slice, in ms.
+void nsCycleCollector_collectSlice(int64_t aSliceTime);
+
+uint32_t nsCycleCollector_suspectedCount();
+void nsCycleCollector_shutdown();
+
+// Helpers for interacting with JS
+void nsCycleCollector_registerJSRuntime(mozilla::CycleCollectedJSRuntime *aRt);
+void nsCycleCollector_forgetJSRuntime();
+
+#define NS_CYCLE_COLLECTOR_LOGGER_CID \
+{ 0x58be81b4, 0x39d2, 0x437c, \
+{ 0x94, 0xea, 0xae, 0xde, 0x2c, 0x62, 0x08, 0xd3 } }
+
+extern nsresult
+nsCycleCollectorLoggerConstructor(nsISupports* outer,
+                                  const nsIID& aIID,
+                                  void* *aInstancePtr);
+
+namespace mozilla {
+namespace cyclecollector {
+
+#ifdef DEBUG
+bool IsJSHolder(void* aHolder);
+#endif
+
+void DeferredFinalize(DeferredFinalizeAppendFunction aAppendFunc,
+                      DeferredFinalizeFunction aFunc,
+                      void* aThing);
+void DeferredFinalize(nsISupports* aSupports);
+
+
+} // namespace cyclecollector
+} // namespace mozilla
+
+#endif // nsCycleCollector_h__