Prepare SyntheticPointerAction to handle touch actions for multiple fingers

content/browser/renderer_host/input/synthetic_gesture_controller.cc

Index: content/browser/renderer_host/input/synthetic_gesture_controller.cc
diff --git a/content/browser/renderer_host/input/synthetic_gesture_controller.cc b/content/browser/renderer_host/input/synthetic_gesture_controller.cc
index 9e5bc84403eb18e01f09e43b26b9db51fbd20211..8ccc135e743d1b04122d5194e2f4ba0a50d000f9 100644
--- a/content/browser/renderer_host/input/synthetic_gesture_controller.cc
+++ b/content/browser/renderer_host/input/synthetic_gesture_controller.cc
@@ -16,7 +16,10 @@ namespace content {
 
 SyntheticGestureController::SyntheticGestureController(
     std::unique_ptr<SyntheticGestureTarget> gesture_target)
-    : gesture_target_(std::move(gesture_target)) {}
+    : gesture_target_(std::move(gesture_target)) {
+  pointer_action_controller_.SetDefaultGestureSourceType(
+      gesture_target_->GetDefaultSyntheticGestureSourceType());
+}
 
 SyntheticGestureController::~SyntheticGestureController() {}
 
@@ -34,6 +37,19 @@ void SyntheticGestureController::QueueSyntheticGesture(
     StartGesture(*pending_gesture_queue_.FrontGesture());
 }
 
+void SyntheticGestureController::QueueSyntheticPointerAction(
+    const SyntheticPointerActionParams& gesture_params,
+    const OnGestureCompleteCallback& completion_callback) {
+  std::unique_ptr<SyntheticGesture> synthetic_gesture =
+      pointer_action_controller_.CreateSyntheticPointerAction(gesture_params);
+  if (synthetic_gesture)
+    QueueSyntheticGesture(std::move(synthetic_gesture), completion_callback);
+}
+
+void SyntheticGestureController::ResetSyntheticPointer() {
+  pointer_action_controller_.ResetSyntheticPointer();
+}
+
 void SyntheticGestureController::Flush(base::TimeTicks timestamp) {
   TRACE_EVENT0("input", "SyntheticGestureController::Flush");
   if (pending_gesture_queue_.IsEmpty())