Don't RAF align touch moves that are blocking.

content/renderer/input/main_thread_event_queue.cc

Index: content/renderer/input/main_thread_event_queue.cc
diff --git a/content/renderer/input/main_thread_event_queue.cc b/content/renderer/input/main_thread_event_queue.cc
index 5c872c0ef2cc04a65eaf42274ce5ee0c57b574ae..706ffacd368037694f504a4c8c7fe4b4f4ccd4ee 100644
--- a/content/renderer/input/main_thread_event_queue.cc
+++ b/content/renderer/input/main_thread_event_queue.cc
@@ -23,9 +23,11 @@ const size_t kTenSeconds = 10 * 1000 * 1000;
 bool isContinuousEvent(const std::unique_ptr<EventWithDispatchType>& event) {
   switch (event->event().type) {
     case blink::WebInputEvent::MouseMove:
-    case blink::WebInputEvent::TouchMove:
     case blink::WebInputEvent::MouseWheel:
       return true;
+    case blink::WebInputEvent::TouchMove:

[tdresser, 2016/08/31 13:23:49]

Add a comment on why we're considering blocking touchmoves non-continuous.

+      return static_cast<const blink::WebTouchEvent&>(event->event())
+                 .dispatchType != blink::WebInputEvent::Blocking;
     default:
       return false;
   }