1 files changed, 57 insertions, 0 deletions
diff --git a/dom/ipc/CoalescedMouseData.h b/dom/ipc/CoalescedMouseData.h
new file mode 100644
index 0000000000..01ff886a1e
--- /dev/null
+++ b/dom/ipc/CoalescedMouseData.h
@@ -0,0 +1,57 @@
+/* -*- 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_dom_CoalescedMouseData_h
+#define mozilla_dom_CoalescedMouseData_h
+
+#include "CoalescedInputData.h"
+#include "mozilla/MouseEvents.h"
+#include "nsRefreshObservers.h"
+
+class nsRefreshDriver;
+
+namespace mozilla {
+namespace dom {
+
+class CoalescedMouseData final : public CoalescedInputData<WidgetMouseEvent> {
+ public:
+  CoalescedMouseData() { MOZ_COUNT_CTOR(mozilla::dom::CoalescedMouseData); }
+
+  ~CoalescedMouseData() { MOZ_COUNT_DTOR(mozilla::dom::CoalescedMouseData); }
+
+  void Coalesce(const WidgetMouseEvent& aEvent,
+                const ScrollableLayerGuid& aGuid,
+                const uint64_t& aInputBlockId);
+
+  bool CanCoalesce(const WidgetMouseEvent& aEvent,
+                   const ScrollableLayerGuid& aGuid,
+                   const uint64_t& aInputBlockId);
+};
+
+class CoalescedMouseMoveFlusher final : public nsARefreshObserver {
+ public:
+  explicit CoalescedMouseMoveFlusher(BrowserChild* aBrowserChild);
+
+  virtual void WillRefresh(mozilla::TimeStamp aTime) override;
+
+  NS_INLINE_DECL_REFCOUNTING(CoalescedMouseMoveFlusher, override)
+
+  void StartObserver();
+  void RemoveObserver();
+
+ private:
+  ~CoalescedMouseMoveFlusher();
+
+  nsRefreshDriver* GetRefreshDriver();
+
+  BrowserChild* mBrowserChild;
+  RefPtr<nsRefreshDriver> mRefreshDriver;
+};
+
+}  // namespace dom
+}  // namespace mozilla
+
+#endif  // mozilla_dom_CoalescedMouseData_h