diff -r 000000000000 -r 6474c204b198 gfx/gl/GfxTexturesReporter.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gfx/gl/GfxTexturesReporter.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,59 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/* vim: set ts=8 sts=4 et sw=4 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 GFXTEXTURESREPORTER_H_
+#define GFXTEXTURESREPORTER_H_
+
+#include "nsIMemoryReporter.h"
+#include "GLTypes.h"
+
+namespace mozilla {
+namespace gl {
+
+class GfxTexturesReporter MOZ_FINAL : public nsIMemoryReporter
+{
+public:
+    NS_DECL_ISUPPORTS
+
+    GfxTexturesReporter()
+    {
+#ifdef DEBUG
+        // There must be only one instance of this class, due to |sAmount|
+        // being static.  Assert this.
+        static bool hasRun = false;
+        MOZ_ASSERT(!hasRun);
+        hasRun = true;
+#endif
+    }
+
+    enum MemoryUse {
+        // when memory being allocated is reported to a memory reporter
+        MemoryAllocated,
+        // when memory being freed is reported to a memory reporter
+        MemoryFreed
+    };
+
+    // When memory is used/freed for tile textures, call this method to update
+    // the value reported by this memory reporter.
+    static void UpdateAmount(MemoryUse action, GLenum format, GLenum type,
+                             int32_t tileWidth, int32_t tileHeight);
+
+    NS_IMETHOD CollectReports(nsIHandleReportCallback* aHandleReport,
+                              nsISupports* aData)
+    {
+        return MOZ_COLLECT_REPORT(
+            "gfx-textures", KIND_OTHER, UNITS_BYTES, sAmount,
+            "Memory used for storing GL textures.");
+    }
+
+private:
+    static int64_t sAmount;
+};
+
+}
+}
+
+#endif // GFXTEXTURESREPORTER_H_