Update WindowTree::OnWindowInputEventAck to include handled

To support post-target accelerators we plan to have the client application report whether an input event was handled or not, when ack-ing the event.

This change updates WindowTree::OnWindowInputEventAck to include a boolean parameter |handled|.

PlatformWindowMus will always mark events as handled. CompositorMusConnection will base the handled state on the ack state of the renderer.

TEST=WindowTreeClientImplTest, WindowTreeApptest, WindowTreeTest, CompositorMusConnectionTest
BUG=560478

Review URL: https://codereview.chromium.org/1749323002

Cr-Commit-Position: refs/heads/master@{#379821}

1 files changed, 1 insertions, 1 deletions

diff --git a/components/mus/public/cpp/tests/test_window_tree.cc b/components/mus/public/cpp/tests/test_window_tree.cc
index 398a661..7301bd9 100644
--- a/components/mus/public/cpp/tests/test_window_tree.cc
+++ b/components/mus/public/cpp/tests/test_window_tree.cc
@@ -132,7 +132,7 @@ void TestWindowTree::SetImeVisibility(uint32_t window_id,
                                       bool visible,
                                       mojo::TextInputStatePtr state) {}
 
-void TestWindowTree::OnWindowInputEventAck(uint32_t event_id) {
+void TestWindowTree::OnWindowInputEventAck(uint32_t event_id, bool handled) {
   EXPECT_FALSE(acked_events_.count(event_id));
   acked_events_.insert(event_id);
 }