[Tracking Patch] Unified gesture detection

content/browser/renderer_host/input/motion_event_web.h

Index: content/browser/renderer_host/input/motion_event_web.h
diff --git a/content/browser/renderer_host/input/motion_event_web.h b/content/browser/renderer_host/input/motion_event_web.h
new file mode 100644
index 0000000000000000000000000000000000000000..011d713af2fc9f5cc4c5ee1cf5e2ff4ff2ada043
--- /dev/null
+++ b/content/browser/renderer_host/input/motion_event_web.h
@@ -0,0 +1,53 @@
+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef CONTENT_BROWSER_RENDERER_HOST_INPUT_MOTION_EVENT_WEB_H_
+#define CONTENT_BROWSER_RENDERER_HOST_INPUT_MOTION_EVENT_WEB_H_
+
+#include "third_party/WebKit/public/web/WebInputEvent.h"
+#include "ui/events/gesture_detection/motion_event.h"
+
+namespace content {
+
+// Implementation of ui::MotionEvent wrapping a WebTouchEvent.
+class MotionEventWeb : public ui::MotionEvent {
+ public:
+  explicit MotionEventWeb(const blink::WebTouchEvent& event);
+  virtual ~MotionEventWeb();
+
+  // ui::MotionEvent
+  virtual Action GetAction() const OVERRIDE;
+  virtual int GetActionIndex() const OVERRIDE;
+  virtual size_t GetPointerCount() const OVERRIDE;
+  virtual int GetPointerId(size_t pointer_index) const OVERRIDE;
+  virtual float GetX(size_t pointer_index) const OVERRIDE;
+  virtual float GetY(size_t pointer_index) const OVERRIDE;
+  virtual float GetTouchMajor(size_t pointer_index) const OVERRIDE;
+  virtual base::TimeTicks GetEventTime() const OVERRIDE;
+  virtual size_t GetHistorySize() const OVERRIDE;
+  virtual base::TimeTicks GetHistoricalEventTime(
+      size_t historical_index) const OVERRIDE;
+  virtual float GetHistoricalTouchMajor(
+      size_t pointer_index,
+      size_t historical_index) const OVERRIDE;
+  virtual float GetHistoricalX(
+      size_t pointer_index,
+      size_t historical_index) const OVERRIDE;
+  virtual float GetHistoricalY(
+      size_t pointer_index,
+      size_t historical_index) const OVERRIDE;
+  virtual scoped_ptr<MotionEvent> Clone() const OVERRIDE;
+  virtual scoped_ptr<MotionEvent> Cancel() const OVERRIDE;
+
+ private:
+  blink::WebTouchEvent event_;
+  Action cached_action_;
+  int cached_action_index_;
+
+  DISALLOW_COPY_AND_ASSIGN(MotionEventWeb);
+};
+
+}  // namespace content
+
+#endif  // CONTENT_BROWSER_RENDERER_HOST_INPUT_MOTION_EVENT_WEB_H_