Adding synthetic touch/mouse drag [Part1]

content/common/input/synthetic_smooth_drag_gesture_params.cc

+// Copyright 2015 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.
+
+#include "content/common/input/synthetic_smooth_drag_gesture_params.h"
+
+#include "base/logging.h"
+
+namespace content {
+
+SyntheticSmoothDragGestureParams::SyntheticSmoothDragGestureParams() {
+}
+
+SyntheticSmoothDragGestureParams::SyntheticSmoothDragGestureParams(
+    const SyntheticSmoothDragGestureParams& other)
+    : SyntheticGestureParams(other),
+      start_point(other.start_point),
+      distances(other.distances),
+      speed_in_pixels_s(other.speed_in_pixels_s) {
+}
+
+SyntheticSmoothDragGestureParams::~SyntheticSmoothDragGestureParams() {
+}
+
+SyntheticGestureParams::GestureType
+SyntheticSmoothDragGestureParams::GetGestureType() const {
+  return SMOOTH_DRAG_GESTURE;
+}
+
+const SyntheticSmoothDragGestureParams* SyntheticSmoothDragGestureParams::Cast(
+    const SyntheticGestureParams* gesture_params) {
+  DCHECK(gesture_params);
+  DCHECK_EQ(SMOOTH_DRAG_GESTURE, gesture_params->GetGestureType());
+  return static_cast<const SyntheticSmoothDragGestureParams*>(gesture_params);
+}
+
+}  // namespace content