Add WindowEventDispatcherTest.TouchDownState for Env::is_touch_down().

ui/aura/window_event_dispatcher_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 "ui/aura/window_event_dispatcher.h"
 
 #include <stddef.h>
 
 #include <utility>
 #include <vector>
@@ skipping 147 matching lines @@
   EXPECT_TRUE(Env::GetInstance()->IsMouseButtonDown());
 
   ui::TouchEvent touch_pressed_event(
       ui::ET_TOUCH_PRESSED, gfx::Point(10, 10), ui::EventTimeForNow(),
       ui::PointerDetails(ui::EventPointerType::POINTER_TYPE_TOUCH, 0));
   host()->dispatcher()->RepostEvent(&touch_pressed_event);
   RunAllPendingInMessageLoop();
   EXPECT_TRUE(Env::GetInstance()->is_touch_down());
 }
 
+// Check that we correctly track whether any touch devices are down in response
+// to touch press and release events with two WindowTreeHost.
+TEST_P(WindowEventDispatcherTest, TouchDownState) {
+  std::unique_ptr<WindowTreeHost> second_host(
+      WindowTreeHost::Create(gfx::Rect(20, 30, 100, 50)));
+  second_host->InitHost();
+  second_host->window()->Show();
+
+  ui::TouchEvent touch_pressed_event1(
+      ui::ET_TOUCH_PRESSED, gfx::Point(10, 10), ui::EventTimeForNow(),
+      ui::PointerDetails(ui::EventPointerType::POINTER_TYPE_TOUCH, 1));
+  ui::TouchEvent touch_pressed_event2(
+      ui::ET_TOUCH_PRESSED, gfx::Point(10, 10), ui::EventTimeForNow(),
+      ui::PointerDetails(ui::EventPointerType::POINTER_TYPE_TOUCH, 2));
+  ui::TouchEvent touch_released_event1(
+      ui::ET_TOUCH_RELEASED, gfx::Point(10, 10), ui::EventTimeForNow(),
+      ui::PointerDetails(ui::EventPointerType::POINTER_TYPE_TOUCH, 1));
+  ui::TouchEvent touch_released_event2(
+      ui::ET_TOUCH_RELEASED, gfx::Point(10, 10), ui::EventTimeForNow(),
+      ui::PointerDetails(ui::EventPointerType::POINTER_TYPE_TOUCH, 2));
+
+  EXPECT_FALSE(Env::GetInstance()->is_touch_down());
+  host()->dispatcher()->OnEventFromSource(&touch_pressed_event1);
+  EXPECT_TRUE(Env::GetInstance()->is_touch_down());
+  second_host->dispatcher()->OnEventFromSource(&touch_pressed_event2);
+  EXPECT_TRUE(Env::GetInstance()->is_touch_down());
+  host()->dispatcher()->OnEventFromSource(&touch_released_event1);
+  EXPECT_TRUE(Env::GetInstance()->is_touch_down());
+  second_host->dispatcher()->OnEventFromSource(&touch_released_event2);
+  EXPECT_FALSE(Env::GetInstance()->is_touch_down());
+}
+
 // Check that we correctly track the state of the mouse buttons in response to
 // button press and release events.
 TEST_P(WindowEventDispatcherTest, MouseButtonState) {
   EXPECT_FALSE(Env::GetInstance()->IsMouseButtonDown());
 
   gfx::Point location;
   std::unique_ptr<ui::MouseEvent> event;
 
   // Press the left button.
   event.reset(new ui::MouseEvent(
@@ skipping 2737 matching lines @@
   EXPECT_EQ(1, last_event_location_delegate.mouse_event_count());
   EXPECT_EQ(1, last_event_location_delegate.nested_message_loop_count());
   EXPECT_EQ(mouse_location, last_event_location_delegate.last_mouse_location());
 
   // After dispatch the location should fallback to that of the
   // WindowTreeClient, which defaults to 0,0.
   EXPECT_EQ(gfx::Point(0, 0), Env::GetInstance()->last_mouse_location());
 }
 
 }  // namespace aura