ui/events: Add changed_button_flags_ in ui::PointerEvent.

services/ui/ws/event_dispatcher.cc

 // Copyright 2015 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/ws/event_dispatcher.h"
 
 #include <algorithm>
 
 #include "base/time/time.h"
 #include "services/ui/ws/accelerator.h"
@@ skipping 139 matching lines @@
       ui::EventType event_type = pair.second.is_mouse_event
                                      ? ui::ET_POINTER_EXITED
                                      : ui::ET_POINTER_CANCELLED;
       ui::EventPointerType pointer_type =
           pair.second.is_mouse_event ? ui::EventPointerType::POINTER_TYPE_MOUSE
                                      : ui::EventPointerType::POINTER_TYPE_TOUCH;
       // TODO(jonross): Track previous location in PointerTarget for sending
       // cancels.
       ui::PointerEvent event(
           event_type, gfx::Point(), gfx::Point(), ui::EF_NONE, pair.first,
-          ui::PointerDetails(pointer_type), ui::EventTimeForNow());
+          0 /* changed_button_flags */, ui::PointerDetails(pointer_type),
+          ui::EventTimeForNow());
       DispatchToPointerTarget(pair.second, event);
     }
     pointer_targets_.clear();
   }
 
   // Set the capture before changing native capture; otherwise, the callback
   // from native platform might try to set the capture again.
   const bool had_capture_window = capture_window_ != nullptr;
   ServerWindow* old_capture_window = capture_window_;
   capture_window_ = window;
@@ skipping 247 matching lines @@
     if (pointer_target.is_pointer_down)
       pointer_targets_[pointer_id].is_pointer_down = true;
     return;
   }
 
   // The targets are changing. Send an exit if appropriate.
   if (event.IsMousePointerEvent()) {
     ui::PointerEvent exit_event(
         ui::ET_POINTER_EXITED, event.location(), event.root_location(),
         event.flags(), ui::PointerEvent::kMousePointerId,
+        0 /* changed_button_flags */,
         ui::PointerDetails(ui::EventPointerType::POINTER_TYPE_MOUSE),
         event.time_stamp());
     DispatchToPointerTarget(pointer_targets_[pointer_id], exit_event);
   }
 
   // Technically we're updating in place, but calling start then stop makes for
   // simpler code.
   StopTrackingPointer(pointer_id);
   StartTrackingPointer(pointer_id, pointer_target);
 }
@@ skipping 132 matching lines @@
 
 void EventDispatcher::OnWindowDestroyed(ServerWindow* window) {
   CancelPointerEventsToTarget(window);
 
   if (mouse_cursor_source_window_ == window)
     mouse_cursor_source_window_ = nullptr;
 }
 
 }  // namespace ws
 }  // namespace ui