[Refactor] Consolidate the logic for whether a widget can be activated.

ash/tooltips/tooltip_controller_unittest.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 "ash/test/ash_test_base.h"
 #include "base/strings/utf_string_conversions.h"
 #include "ui/aura/env.h"
 #include "ui/aura/test/event_generator.h"
 #include "ui/aura/window.h"
@@ skipping 21 matching lines @@
 namespace {
 
 views::Widget* CreateNewWidgetWithBoundsOn(int display,
                                            const gfx::Rect& bounds) {
   views::Widget* widget = new views::Widget;
   views::Widget::InitParams params;
   params.type = views::Widget::InitParams::TYPE_WINDOW_FRAMELESS;
   params.accept_events = true;
   params.ownership = views::Widget::InitParams::WIDGET_OWNS_NATIVE_WIDGET;
   params.context = Shell::GetAllRootWindows().at(display);
-  params.child = true;
   params.bounds = bounds;
   widget->Init(params);
   widget->Show();
   return widget;
 }
 
 views::Widget* CreateNewWidgetOn(int display) {
   return CreateNewWidgetWithBoundsOn(display, gfx::Rect());
 }
 
@@ skipping 117 matching lines @@
   // be able to show tooltips on the primary display.
   aura::test::EventGenerator generator1(root_windows[0]);
   generator1.MoveMouseRelativeTo(widget1->GetNativeView(),
                                  view1->bounds().CenterPoint());
   helper_->FireTooltipTimer();
   EXPECT_TRUE(helper_->IsTooltipVisible());
 }
 
 }  // namespace test
 }  // namespace ash