diff -r 000000000000 -r 6474c204b198 layout/style/nsLayoutStylesheetCache.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/layout/style/nsLayoutStylesheetCache.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,72 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* 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 nsLayoutStylesheetCache_h__
+#define nsLayoutStylesheetCache_h__
+
+#include "nsIMemoryReporter.h"
+#include "nsIObserver.h"
+#include "nsAutoPtr.h"
+#include "mozilla/Attributes.h"
+#include "mozilla/MemoryReporting.h"
+
+class nsCSSStyleSheet;
+class nsIFile;
+class nsIURI;
+
+namespace mozilla {
+namespace css {
+class Loader;
+}
+}
+
+class nsLayoutStylesheetCache MOZ_FINAL
+ : public nsIObserver
+ , public nsIMemoryReporter
+{
+  NS_DECL_ISUPPORTS
+  NS_DECL_NSIOBSERVER
+  NS_DECL_NSIMEMORYREPORTER
+
+  static nsCSSStyleSheet* ScrollbarsSheet();
+  static nsCSSStyleSheet* FormsSheet();
+  // This function is expected to return nullptr when the dom.forms.number
+  // pref is disabled.
+  static nsCSSStyleSheet* NumberControlSheet();
+  static nsCSSStyleSheet* UserContentSheet();
+  static nsCSSStyleSheet* UserChromeSheet();
+  static nsCSSStyleSheet* UASheet();
+  static nsCSSStyleSheet* QuirkSheet();
+  static nsCSSStyleSheet* FullScreenOverrideSheet();
+
+  static void Shutdown();
+
+  size_t SizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf) const;
+
+private:
+  nsLayoutStylesheetCache();
+  ~nsLayoutStylesheetCache();
+
+  static void EnsureGlobal();
+  void InitFromProfile();
+  void InitMemoryReporter();
+  static void LoadSheetFile(nsIFile* aFile, nsRefPtr<nsCSSStyleSheet> &aSheet);
+  static void LoadSheet(nsIURI* aURI, nsRefPtr<nsCSSStyleSheet> &aSheet,
+                        bool aEnableUnsafeRules);
+
+  static nsLayoutStylesheetCache* gStyleCache;
+  static mozilla::css::Loader* gCSSLoader;
+  nsRefPtr<nsCSSStyleSheet> mScrollbarsSheet;
+  nsRefPtr<nsCSSStyleSheet> mFormsSheet;
+  nsRefPtr<nsCSSStyleSheet> mNumberControlSheet;
+  nsRefPtr<nsCSSStyleSheet> mUserContentSheet;
+  nsRefPtr<nsCSSStyleSheet> mUserChromeSheet;
+  nsRefPtr<nsCSSStyleSheet> mUASheet;
+  nsRefPtr<nsCSSStyleSheet> mQuirkSheet;
+  nsRefPtr<nsCSSStyleSheet> mFullScreenOverrideSheet;
+};
+
+#endif