Laser tool blocks events from propagating.

ash/shell.cc

 // Copyright (c) 2012 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 "ash/shell.h"
 
 #include <algorithm>
 #include <string>
 #include <utility>
 
@@ skipping 35 matching lines @@
 #include "ash/display/event_transformation_handler.h"
 #include "ash/display/mouse_cursor_event_filter.h"
 #include "ash/display/screen_ash.h"
 #include "ash/display/screen_position_controller.h"
 #include "ash/display/window_tree_host_manager.h"
 #include "ash/drag_drop/drag_drop_controller.h"
 #include "ash/first_run/first_run_helper_impl.h"
 #include "ash/high_contrast/high_contrast_controller.h"
 #include "ash/host/ash_window_tree_host_init_params.h"
 #include "ash/ime/input_method_event_handler.h"
+#include "ash/laser/laser_pointer_controller.h"
 #include "ash/magnifier/magnification_controller.h"
 #include "ash/magnifier/partial_magnification_controller.h"
 #include "ash/root_window_controller.h"
 #include "ash/shell_init_params.h"
 #include "ash/system/chromeos/screen_layout_observer.h"
 #include "ash/utility/screenshot_controller.h"
 #include "ash/wm/ash_focus_rules.h"
 #include "ash/wm/ash_native_cursor_manager.h"
 #include "ash/wm/event_client_impl.h"
 #include "ash/wm/immersive_handler_factory_ash.h"
@@ skipping 466 matching lines @@
   window_tree_host_manager_->CloseChildWindows();
   // MruWindowTracker must be destroyed after all windows have been deleted to
   // avoid a possible crash when Shell is destroyed from a non-normal shutdown
   // path. (crbug.com/485438).
   wm_shell_->DeleteMruWindowTracker();
 
   // These need a valid Shell instance to clean up properly, so explicitly
   // delete them before invalidating the instance.
   // Alphabetical. TODO(oshima): sort.
   magnification_controller_.reset();
-  partial_magnification_controller_.reset();
   tooltip_controller_.reset();
   event_client_.reset();
   toplevel_window_event_handler_.reset();
   visibility_controller_.reset();
 
   power_button_controller_.reset();
   lock_state_controller_.reset();
 
   screen_pinning_controller_.reset();
 
 #if defined(OS_CHROMEOS)
   resolution_notification_controller_.reset();
 #endif
   screenshot_controller_.reset();
   mouse_cursor_filter_.reset();
   modality_filter_.reset();
 
 #if defined(OS_CHROMEOS)
   touch_transformer_controller_.reset();
   stylus_metrics_recorder_.reset();
   audio_a11y_controller_.reset();
+  laser_pointer_controller_.reset();
+  partial_magnification_controller_.reset();
 #endif  // defined(OS_CHROMEOS)
 
   // This also deletes all RootWindows. Note that we invoke Shutdown() on
   // WindowTreeHostManager before resetting |window_tree_host_manager_|, since
   // destruction
   // of its owned RootWindowControllers relies on the value.
   ScreenAsh::CreateScreenForShutdown();
   display_configuration_controller_.reset();
 
   wm_shell_->Shutdown();
@@ skipping 202 matching lines @@
   // before events are consumed elsewhere.
   stylus_metrics_recorder_.reset(new StylusMetricsRecorder());
   PrependPreTargetHandler(stylus_metrics_recorder_.get());
 #endif
 
   // Create Controllers that may need root window.
   // TODO(oshima): Move as many controllers before creating
   // RootWindowController as possible.
   visibility_controller_.reset(new AshVisibilityController);
 
+#if defined(OS_CHROMEOS)
+  laser_pointer_controller_.reset(new LaserPointerController());

[jdufault, 2016/09/16 19:58:41]

We should try to keep the init order the same relative to the deinit order, so
please combine the two #ifdef blocks.

[sammiequon, 2016/09/16 20:37:40]

Done.

+#endif
+
   magnification_controller_.reset(MagnificationController::CreateInstance());
   wm_shell_->CreateMruWindowTracker();
 
+#if defined(OS_CHROMEOS)
   partial_magnification_controller_.reset(new PartialMagnificationController());
+#endif
 
   autoclick_controller_.reset(AutoclickController::CreateInstance());
 
   high_contrast_controller_.reset(new HighContrastController);
   video_detector_.reset(new VideoDetector);
 
   tooltip_controller_.reset(new views::corewm::TooltipController(
       std::unique_ptr<views::corewm::Tooltip>(new views::corewm::TooltipAura)));
   AddPreTargetHandler(tooltip_controller_.get());
 
@@ skipping 131 matching lines @@
 std::unique_ptr<ui::EventTargetIterator> Shell::GetChildIterator() const {
   return std::unique_ptr<ui::EventTargetIterator>();
 }
 
 ui::EventTargeter* Shell::GetEventTargeter() {
   NOTREACHED();
   return nullptr;
 }
 
 }  // namespace ash