WIP: Eliminate event.target() usage from TrayEventFilter

ash/shelf/shelf_tooltip_manager.cc

 // Copyright 2013 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/shelf/shelf_tooltip_manager.h"
 
 #include "ash/shelf/shelf.h"
 #include "ash/shelf/shelf_layout_manager.h"
 #include "ash/shelf/shelf_view.h"
 #include "ash/shell.h"
@@ skipping 156 matching lines @@
 
 void ShelfTooltipManager::ShowTooltipWithDelay(views::View* view) {
   if (!shelf_layout_manager_ || shelf_layout_manager_->IsVisible()) {
     timer_.Start(FROM_HERE, base::TimeDelta::FromMilliseconds(timer_delay_),
                  base::Bind(&ShelfTooltipManager::ShowTooltip,
                             weak_factory_.GetWeakPtr(), view));
   }
 }
 
 void ShelfTooltipManager::OnMousePressed(const ui::MouseEvent& event,
-                                         const gfx::Point& location_in_screen) {
+                                         const gfx::Point& location_in_screen,
+                                         views::Widget* target) {
   // Close on any mouse press events inside or outside the tooltip.
   Close();
 }
 
 void ShelfTooltipManager::OnTouchPressed(const ui::TouchEvent& event,
-                                         const gfx::Point& location_in_screen) {
+                                         const gfx::Point& location_in_screen,
+                                         views::Widget* target) {
   // Close on any touch press events inside or outside the tooltip.
   Close();
 }
 
 void ShelfTooltipManager::OnEvent(ui::Event* event) {
   // Mouse and touch press events are handled via views::PointerWatcher.
   if (event->type() == ui::ET_MOUSE_PRESSED ||
       event->type() == ui::ET_TOUCH_PRESSED) {
     return;
   }
@@ skipping 49 matching lines @@
     // AutoHide state change happens during an event filter, so immediate close
     // may cause a crash in the HandleMouseEvent() after the filter.  So we just
     // schedule the Close here.
     base::ThreadTaskRunnerHandle::Get()->PostTask(
         FROM_HERE,
         base::Bind(&ShelfTooltipManager::Close, weak_factory_.GetWeakPtr()));
   }
 }
 
 }  // namespace ash