[VSync Queue] Plug touch ack to gesture events and flush vsync queue if necessary

content/browser/renderer_host/render_widget_host_view_aura.cc

Index: content/browser/renderer_host/render_widget_host_view_aura.cc
diff --git a/content/browser/renderer_host/render_widget_host_view_aura.cc b/content/browser/renderer_host/render_widget_host_view_aura.cc
index d86e56623fd9426a5aa35f26291a36e41dfd7833..c1a7e50d6ed40c7dd42b2db2a1b062d31f91122d 100644
--- a/content/browser/renderer_host/render_widget_host_view_aura.cc
+++ b/content/browser/renderer_host/render_widget_host_view_aura.cc
@@ -1036,9 +1036,18 @@ void RenderWidgetHostViewAura::ProcessAckedTouchEvent(
   // TouchEventQueue. So we don't expect an ACK up here.
   DCHECK(touch.event.GetType() != blink::WebInputEvent::kTouchScrollStarted);
 
-  ui::EventResult result = (ack_result == INPUT_EVENT_ACK_STATE_CONSUMED)
-                               ? ui::ER_HANDLED
-                               : ui::ER_UNHANDLED;
+  ui::EventResult result;
+  switch (ack_result) {
+    case INPUT_EVENT_ACK_STATE_CONSUMED:
+      result = ui::ER_HANDLED;
+      break;
+    case INPUT_EVENT_ACK_STATE_IGNORED:

[dtapuska, 2017/05/25 15:40:12]

I'm not sure we should map Ignored to ignored_non_blocking; I believe the
Renderer can still return IGNORED. I think you really want to map the
SET_NON_BLOCKING/SET_NON_BLOCKING_FLING states don't you?

+      result = ui::ER_IGNORED_NON_BLOCKING;
+      break;
+    default:
+      result = ui::ER_UNHANDLED;
+      break;
+  }
 
   blink::WebTouchPoint::State required_state;
   switch (touch.event.GetType()) {