Make SyntheticPointerAction to flush the pointer action sequence

content/browser/renderer_host/input/synthetic_pointer_action_controller.cc

+// Copyright 2016 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/browser/renderer_host/input/synthetic_pointer_action_controller.h"
+
+namespace content {
+
+SyntheticPointerActionController::SyntheticPointerActionController() {
+  std::fill(index_map_.begin(), index_map_.end(), -1);
+}
+SyntheticPointerActionController::~SyntheticPointerActionController() {}
+
+std::unique_ptr<SyntheticGesture>
+SyntheticPointerActionController::CreateSyntheticPointerAction(
+    const SyntheticPointerActionListParams& gesture_params) {
+  if (!synthetic_pointer_)
+    SetSyntheticPointer(gesture_params);
+
+  std::unique_ptr<SyntheticGesture> synthetic_gesture =
+      std::unique_ptr<SyntheticGesture>(new SyntheticPointerAction(
+          gesture_params, synthetic_pointer_.get(), &index_map_));
+  return synthetic_gesture;
+}
+
+void SyntheticPointerActionController::SetSyntheticPointer(
+    const SyntheticPointerActionListParams& gesture_params) {
+  DCHECK_GE(gesture_params.param_list.size(), 0u);
+  SyntheticPointerActionParams action_params = gesture_params.param_list[0];
+
+  if (action_params.gesture_source_type ==
+      SyntheticGestureParams::DEFAULT_INPUT) {
+    action_params.gesture_source_type = default_type_;
+  }
+  DCHECK_NE(action_params.gesture_source_type,
+            SyntheticGestureParams::DEFAULT_INPUT);
+  synthetic_pointer_ =
+      SyntheticPointer::Create(action_params.gesture_source_type);
+}
+
+void SyntheticPointerActionController::SetDefaultGestureSourceType(
+    SyntheticGestureParams::GestureSourceType default_type) {
+  default_type_ = default_type;
+}
+
+}  // namespace content