mus: Disregard windows that explicitly set can_accept_events to be false when sending events.

services/ui/public/cpp/lib/window_tree_client.cc

 // Copyright 2014 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 "services/ui/public/cpp/window_tree_client.h"
 
 #include <stddef.h>
 
 #include <string>
 #include <utility>
@@ skipping 687 matching lines @@
 // WindowTreeClient, WindowTreeClient implementation:
 
 void WindowTreeClient::AddObserver(WindowTreeClientObserver* observer) {
   observers_.AddObserver(observer);
 }
 
 void WindowTreeClient::RemoveObserver(WindowTreeClientObserver* observer) {
   observers_.RemoveObserver(observer);
 }
 
+void WindowTreeClient::SetCanAcceptEvents(Id window_id,
+                                          bool can_accept_events) {
+  DCHECK(tree_);
+  if (can_accept_events_ != can_accept_events) {
+    tree_->SetCanAcceptEvents(window_id, can_accept_events);
+    can_accept_events_ = can_accept_events;

[sadrul, 2016/07/12 17:32:33]

This is wrong. Some window in a WindowTreeClient may want to accept events,
while some other windows in the same WTC may not. |can_accept_events_| should be
something tracked in mus::Window, not in WindowTreeClient.

[riajiang, 2016/07/12 18:46:40]

Done. Moved to ui::Window.

+  }
+}
+
 void WindowTreeClient::OnEmbed(ClientSpecificId client_id,
                                    mojom::WindowDataPtr root_data,
                                    mojom::WindowTreePtr tree,
                                    int64_t display_id,
                                    Id focused_window_id,
                                    bool drawn) {
   DCHECK(!tree_ptr_);
   tree_ptr_ = std::move(tree);
   tree_ptr_.set_connection_error_handler(
       base::Bind(&DeleteWindowTreeClient, this));
@@ skipping 524 matching lines @@
     Window* window,
     const gfx::Vector2d& offset,
     const gfx::Insets& hit_area) {
   if (window_manager_internal_client_) {
     window_manager_internal_client_->SetUnderlaySurfaceOffsetAndExtendedHitArea(
         server_id(window), offset.x(), offset.y(), hit_area);
   }
 }
 
 }  // namespace ui