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) {}

[tdresser, 2014/02/03 15:52:58]

It feels odd to me that we default this to true, and then switch it to false if
necessary. It would feel more natural to default to false and switch to true if
necessary.

[tdresser, 2014/02/03 18:55:14]

Nevermind, this makes sense.

 
 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) {