Communicate whether passive event listeners exist to cc.

cc/trees/layer_tree_host_unittest.cc

 // Copyright 2011 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 "cc/trees/layer_tree_host.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <algorithm>
@@ skipping 1315 matching lines @@
 
 // This test verifies that properties on the layer tree host are commited
 // to the impl side.
 class LayerTreeHostTestCommit : public LayerTreeHostTest {
  public:
   LayerTreeHostTestCommit() {}
 
   void BeginTest() override {
     layer_tree_host()->SetViewportSize(gfx::Size(20, 20));
     layer_tree_host()->set_background_color(SK_ColorGRAY);
-    layer_tree_host()->SetHaveWheelEventHandlers(true);
+    layer_tree_host()->SetEventListenerProperties(
+        EventListenerClass::kMouseWheel, EventListenerProperties::kPassive);
+    layer_tree_host()->SetEventListenerProperties(
+        EventListenerClass::kTouch,
+        EventListenerProperties::kBlocking | EventListenerProperties::kPassive);
     layer_tree_host()->SetHaveScrollEventHandlers(true);
 
     PostSetNeedsCommitToMainThread();
   }
 
   void DidActivateTreeOnThread(LayerTreeHostImpl* impl) override {
     EXPECT_EQ(gfx::Size(20, 20), impl->DrawViewportSize());
     EXPECT_EQ(SK_ColorGRAY, impl->active_tree()->background_color());
-    EXPECT_TRUE(impl->active_tree()->have_wheel_event_handlers());
+    EXPECT_EQ(EventListenerProperties::kPassive,
+              impl->active_tree()->event_listener_properties(
+                  EventListenerClass::kMouseWheel));
+    EXPECT_EQ(
+        EventListenerProperties::kBlocking | EventListenerProperties::kPassive,
+        impl->active_tree()->event_listener_properties(
+            EventListenerClass::kTouch));
     EXPECT_TRUE(impl->active_tree()->have_scroll_event_handlers());
 
     EndTest();
   }
 
   void AfterTest() override {}
 };
 
 MULTI_THREAD_TEST_F(LayerTreeHostTestCommit);
 
@@ skipping 5240 matching lines @@
     EndTest();
   }
 
   void AfterTest() override {}
 };
 
 SINGLE_AND_MULTI_THREAD_TEST_F(LayerTreeHostTestPaintedDeviceScaleFactor);
 
 }  // namespace
 }  // namespace cc