Enable CursorManager::LockCursor to lock cursor visibility.

ash/wm/window_manager_unittest.cc

Index: ash/wm/window_manager_unittest.cc
diff --git a/ash/wm/window_manager_unittest.cc b/ash/wm/window_manager_unittest.cc
index b99bbb841bd58effd0fd5f40d0d4f4d425ea3843..b7ceac174e17dea01b8ca03e7962b825d0258697 100644
--- a/ash/wm/window_manager_unittest.cc
+++ b/ash/wm/window_manager_unittest.cc
@@ -598,6 +598,10 @@ TEST_F(WindowManagerTest, UpdateCursorVisibility) {
       ui::ET_TOUCH_PRESSED, gfx::Point(0, 0), 0, getTime());
   ui::TouchEvent touch_pressed2(
       ui::ET_TOUCH_PRESSED, gfx::Point(0, 0), 1, getTime());
+  ui::TouchEvent touch_released1(
+      ui::ET_TOUCH_RELEASED, gfx::Point(0, 0), 0, getTime());
+  ui::TouchEvent touch_released2(
+      ui::ET_TOUCH_RELEASED, gfx::Point(0, 0), 1, getTime());
 
   root_window->AsRootWindowHostDelegate()->OnHostMouseEvent(&mouse_moved);
   EXPECT_TRUE(cursor_manager->cursor_visible());
@@ -605,6 +609,8 @@ TEST_F(WindowManagerTest, UpdateCursorVisibility) {
   EXPECT_FALSE(cursor_manager->cursor_visible());
   root_window->AsRootWindowHostDelegate()->OnHostMouseEvent(&mouse_moved);
   EXPECT_TRUE(cursor_manager->cursor_visible());
+  root_window->AsRootWindowHostDelegate()->OnHostTouchEvent(&touch_released1);
+  EXPECT_TRUE(cursor_manager->cursor_visible());
 
   // If someone else made cursor invisible keep it invisible even after it
   // received mouse events.
@@ -615,6 +621,8 @@ TEST_F(WindowManagerTest, UpdateCursorVisibility) {
   EXPECT_FALSE(cursor_manager->cursor_visible());
   root_window->AsRootWindowHostDelegate()->OnHostMouseEvent(&mouse_moved);
   EXPECT_FALSE(cursor_manager->cursor_visible());
+  root_window->AsRootWindowHostDelegate()->OnHostTouchEvent(&touch_released2);
+  EXPECT_FALSE(cursor_manager->cursor_visible());
 
   // Back to normal.
   cursor_manager->ShowCursor(true);
@@ -624,6 +632,8 @@ TEST_F(WindowManagerTest, UpdateCursorVisibility) {
   EXPECT_FALSE(cursor_manager->cursor_visible());
   root_window->AsRootWindowHostDelegate()->OnHostMouseEvent(&mouse_moved);
   EXPECT_TRUE(cursor_manager->cursor_visible());
+  root_window->AsRootWindowHostDelegate()->OnHostTouchEvent(&touch_released2);
+  EXPECT_TRUE(cursor_manager->cursor_visible());
 }
 
 }  // namespace ash