Add touch scrolling modes experimental flags (DEPRECATED)

content/browser/renderer_host/input/gesture_event_packet.cc

Index: content/browser/renderer_host/input/gesture_event_packet.cc
diff --git a/content/browser/renderer_host/input/gesture_event_packet.cc b/content/browser/renderer_host/input/gesture_event_packet.cc
index d0fe17219b9e2ecba7b69d2ed15c5dece4ffba50..1247a37d905390eb1de45482dd7f63ec5d6213b8 100644
--- a/content/browser/renderer_host/input/gesture_event_packet.cc
+++ b/content/browser/renderer_host/input/gesture_event_packet.cc
@@ -36,11 +36,13 @@ ToGestureSource(const WebTouchEvent& event) {
 
 GestureEventPacket::GestureEventPacket()
     : gesture_count_(0),
-      gesture_source_(INVALID) {}
+      gesture_source_(INVALID),
+      is_independent_(true) {}
 
 GestureEventPacket::GestureEventPacket(GestureSource source)
     : gesture_count_(0),
-      gesture_source_(source) {
+      gesture_source_(source),
+      is_independent_(true) {
   DCHECK_NE(gesture_source_, INVALID);
 }
 
@@ -49,6 +51,10 @@ GestureEventPacket::~GestureEventPacket() {}
 void GestureEventPacket::Push(const blink::WebGestureEvent& gesture) {
   CHECK_LT(gesture_count_, static_cast<size_t>(kMaxGesturesPerTouch));
   gestures_[gesture_count_++] = gesture;
+  if (gesture.type != WebInputEvent::GestureScrollUpdate &&
+      gesture.type != WebInputEvent::GestureScrollUpdateWithoutPropagation &&
+      gesture.type != WebInputEvent::GesturePinchUpdate)
+    is_independent_ = false;
 }
 
 GestureEventPacket GestureEventPacket::FromTouch(const WebTouchEvent& event) {