Non passive touch end or touch cancel listeners should not block scroll.

ui/events/blink/input_handler_proxy_unittest.cc

Index: ui/events/blink/input_handler_proxy_unittest.cc
diff --git a/ui/events/blink/input_handler_proxy_unittest.cc b/ui/events/blink/input_handler_proxy_unittest.cc
index 729029b4b1d6273c22ed12e9f5805e73cc4a5236..caf122c55f61ca9c53946ddc85e0a433b12979fd 100644
--- a/ui/events/blink/input_handler_proxy_unittest.cc
+++ b/ui/events/blink/input_handler_proxy_unittest.cc
@@ -1994,6 +1994,10 @@ TEST_P(InputHandlerProxyTest, MultiTouchPointHitTestNegative) {
   EXPECT_CALL(mock_input_handler_,
               GetEventListenerProperties(cc::EventListenerClass::kTouch))
       .WillOnce(testing::Return(cc::EventListenerProperties::kNone));
+  EXPECT_CALL(
+      mock_input_handler_,
+      GetEventListenerProperties(cc::EventListenerClass::kTouchEndOrCancel))
+      .WillOnce(testing::Return(cc::EventListenerProperties::kNone));
   EXPECT_CALL(mock_input_handler_, DoTouchEventsBlockScrollAt(testing::_))
       .WillOnce(testing::Return(false));
   EXPECT_CALL(mock_input_handler_,
@@ -2066,6 +2070,37 @@ TEST_P(InputHandlerProxyTest, MultiTouchPointHitTestPassivePositive) {
   VERIFY_AND_RESET_MOCKS();
 }
 
+TEST_P(InputHandlerProxyTest, TouchStartPassiveAndTouchEndBlocking) {
+  // The touch start is not in a touch-region but there is a touch end handler
+  // so to maintain targeting we need to dispatch the touch start as
+  // non-blocking but drop all touch moves.
+  expected_disposition_ = InputHandlerProxy::DID_HANDLE_NON_BLOCKING;
+  VERIFY_AND_RESET_MOCKS();
+
+  EXPECT_CALL(mock_input_handler_,
+              GetEventListenerProperties(cc::EventListenerClass::kTouch))
+      .WillOnce(testing::Return(cc::EventListenerProperties::kNone));
+  EXPECT_CALL(
+      mock_input_handler_,
+      GetEventListenerProperties(cc::EventListenerClass::kTouchEndOrCancel))
+      .WillOnce(testing::Return(cc::EventListenerProperties::kBlocking));
+  EXPECT_CALL(mock_input_handler_, DoTouchEventsBlockScrollAt(testing::_))
+      .WillOnce(testing::Return(false));
+
+  WebTouchEvent touch;
+  touch.type = WebInputEvent::TouchStart;
+  touch.touchesLength = 1;
+  touch.touches[0] = CreateWebTouchPoint(WebTouchPoint::StatePressed, 0, 0);
+  EXPECT_EQ(expected_disposition_, input_handler_->HandleInputEvent(touch));
+
+  touch.type = WebInputEvent::TouchMove;
+  touch.touchesLength = 1;
+  touch.touches[0] = CreateWebTouchPoint(WebTouchPoint::StatePressed, 10, 10);
+  EXPECT_EQ(InputHandlerProxy::DROP_EVENT,
+            input_handler_->HandleInputEvent(touch));
+  VERIFY_AND_RESET_MOCKS();
+}
+
 TEST_P(InputHandlerProxyTest, GestureFlingCancelledByKeyboardEvent) {
   // We shouldn't send any events to the widget for this gesture.
   expected_disposition_ = InputHandlerProxy::DID_HANDLE;