1 files changed, 26 insertions, 0 deletions
diff --git a/gfx/layers/apz/src/ExpectedGeckoMetrics.cpp b/gfx/layers/apz/src/ExpectedGeckoMetrics.cpp
new file mode 100644
index 0000000000..26b94e94d4
--- /dev/null
+++ b/gfx/layers/apz/src/ExpectedGeckoMetrics.cpp
@@ -0,0 +1,26 @@
+/* -*- 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/. */
+
+#include "ExpectedGeckoMetrics.h"
+#include "FrameMetrics.h"
+
+namespace mozilla {
+namespace layers {
+
+void ExpectedGeckoMetrics::UpdateFrom(const FrameMetrics& aMetrics) {
+  mVisualScrollOffset = aMetrics.GetVisualScrollOffset();
+  mLayoutScrollOffset = aMetrics.GetLayoutScrollOffset();
+  mZoom = aMetrics.GetZoom();
+  mDevPixelsPerCSSPixel = aMetrics.GetDevPixelsPerCSSPixel();
+}
+
+void ExpectedGeckoMetrics::UpdateZoomFrom(const FrameMetrics& aMetrics) {
+  mZoom = aMetrics.GetZoom();
+  mDevPixelsPerCSSPixel = aMetrics.GetDevPixelsPerCSSPixel();
+}
+
+}  // namespace layers
+}  // namespace mozilla