1 files changed, 49 insertions, 0 deletions
diff --git a/gfx/layers/composite/FrameUniformityData.h b/gfx/layers/composite/FrameUniformityData.h
new file mode 100644
index 0000000000..d1e69065af
--- /dev/null
+++ b/gfx/layers/composite/FrameUniformityData.h
@@ -0,0 +1,49 @@
+/* -*- 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 mozilla_layers_FrameUniformityData_h_
+#define mozilla_layers_FrameUniformityData_h_
+
+#include "ipc/IPCMessageUtils.h"
+#include "js/TypeDecls.h"
+#include "ipc/IPCMessageUtilsSpecializations.h"
+#include "mozilla/RefPtr.h"
+#include "mozilla/UniquePtr.h"
+#include "nsTArray.h"
+
+namespace mozilla {
+namespace layers {
+
+class FrameUniformityData {
+  friend struct IPC::ParamTraits<FrameUniformityData>;
+
+ public:
+  bool ToJS(JS::MutableHandle<JS::Value> aOutValue, JSContext* aContext);
+  // Contains the calculated frame uniformities
+  std::map<uintptr_t, float> mUniformities;
+};
+
+}  // namespace layers
+}  // namespace mozilla
+
+namespace IPC {
+template <>
+struct ParamTraits<mozilla::layers::FrameUniformityData> {
+  typedef mozilla::layers::FrameUniformityData paramType;
+
+  static void Write(MessageWriter* aWriter, const paramType& aParam) {
+    WriteParam(aWriter, aParam.mUniformities);
+  }
+
+  static bool Read(MessageReader* aReader, paramType* aResult) {
+    return ParamTraitsStd<std::map<uintptr_t, float>>::Read(
+        aReader, &aResult->mUniformities);
+  }
+};
+
+}  // namespace IPC
+
+#endif  // mozilla_layers_FrameUniformityData_h_