Add touch scrolling modes experimental flags (DEPRECATED)

content/browser/renderer_host/input/gesture_event_packet.cc

 // Copyright 2014 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/gesture_event_packet.h"
 
 #include "base/logging.h"
 
 using blink::WebGestureEvent;
 using blink::WebInputEvent;
@@ skipping 18 matching lines @@
 GestureEventPacket::GestureSource
 ToGestureSource(const WebTouchEvent& event) {
   return IsTouchSequenceStart(event) ? GestureEventPacket::TOUCH_BEGIN
                                      : GestureEventPacket::TOUCH;
 }
 
 }  // namespace
 
 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);
 }
 
 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) {
   return GestureEventPacket(ToGestureSource(event));
 }
 
 GestureEventPacket GestureEventPacket::FromTouchTimeout(
     const WebGestureEvent& event) {
   GestureEventPacket packet(TOUCH_TIMEOUT);
   packet.Push(event);
   return packet;
 }
 
 }  // namespace content