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

services/ui/public/cpp/lib/window.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.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <set>
@@ skipping 429 matching lines @@
 
 bool Window::HasFocus() const {
   return client_ && client_->GetFocusedWindow() == this;
 }
 
 void Window::SetCanFocus(bool can_focus) {
   if (client_)
     client_->SetCanFocus(server_id_, can_focus);
 }
 
+void Window::SetCanAcceptEvents(bool can_accept_events) {
+  if (client_ && can_accept_events_ != can_accept_events) {

[sadrul, 2016/07/12 19:44:19]

Prefer early return.

  if (can_accept_events_ == can_accept_events)
    return;
  can_accept_events_ = can_accept_events;
  if (client_)
    client_->...

[riajiang, 2016/07/12 20:51:40]

Done.

+    client_->SetCanAcceptEvents(server_id_, can_accept_events);
+    can_accept_events_ = can_accept_events;
+  }
+}
+
 void Window::Embed(ui::mojom::WindowTreeClientPtr client, uint32_t flags) {
   Embed(std::move(client), base::Bind(&EmptyEmbedCallback), flags);
 }
 
 void Window::Embed(ui::mojom::WindowTreeClientPtr client,
                    const EmbedCallback& callback,
                    uint32_t flags) {
   if (PrepareForEmbed())
     client_->Embed(server_id_, std::move(client), flags, callback);
   else
@@ skipping 432 matching lines @@
     notifier->NotifyWindowReordered();
 
   return true;
 }
 
 // static
 Window** Window::GetStackingTarget(Window* window) {
   return &window->stacking_target_;
 }
 }  // namespace ui