chromeos: Add DisplayPowerServiceProvider.

ash/wm/user_activity_detector_unittest.cc

Index: ash/wm/user_activity_detector_unittest.cc
diff --git a/ash/wm/user_activity_detector_unittest.cc b/ash/wm/user_activity_detector_unittest.cc
index e0108d44c720524274b672c5f2911c3a393594fc..6c88660cce59775ee69e74606181d4bee799c345 100644
--- a/ash/wm/user_activity_detector_unittest.cc
+++ b/ash/wm/user_activity_detector_unittest.cc
@@ -97,8 +97,8 @@ TEST_F(UserActivityDetectorTest, Basic) {
   EXPECT_EQ(1, observer_->num_invocations());
   observer_->reset_stats();
 
-  base::TimeDelta advance_delta =
-      base::TimeDelta::FromSeconds(UserActivityDetector::kNotifyIntervalMs);
+  base::TimeDelta advance_delta = base::TimeDelta::FromMilliseconds(
+      UserActivityDetector::kNotifyIntervalMs);
   AdvanceTime(advance_delta);
   ui::MouseEvent mouse_event(
       ui::ET_MOUSE_MOVED, gfx::Point(), gfx::Point(), ui::EF_NONE);
@@ -108,14 +108,29 @@ TEST_F(UserActivityDetectorTest, Basic) {
   EXPECT_EQ(1, observer_->num_invocations());
   observer_->reset_stats();
 
-  // Ignore one mouse event when all displays are turned off.
-  detector_->OnAllOutputsTurnedOff();
-  AdvanceTime(advance_delta);
+  // Temporarily ignore mouse events when displays are turned on or off.
+  detector_->OnDisplayPowerChanging();
+  detector_->OnMouseEvent(&mouse_event);
+  EXPECT_FALSE(mouse_event.handled());
+  EXPECT_EQ(0, observer_->num_invocations());
+  observer_->reset_stats();
+
+  const base::TimeDelta kIgnoreMouseTime =
+      base::TimeDelta::FromMilliseconds(
+          UserActivityDetector::kDisplayPowerChangeIgnoreMouseMs);
+  AdvanceTime(kIgnoreMouseTime / 2);
   detector_->OnMouseEvent(&mouse_event);
   EXPECT_FALSE(mouse_event.handled());
   EXPECT_EQ(0, observer_->num_invocations());
   observer_->reset_stats();
 
+  // After enough time has passed, mouse events should be reported again.
+  AdvanceTime(std::max(kIgnoreMouseTime, advance_delta));
+  detector_->OnMouseEvent(&mouse_event);
+  EXPECT_FALSE(mouse_event.handled());
+  EXPECT_EQ(1, observer_->num_invocations());
+  observer_->reset_stats();
+
   AdvanceTime(advance_delta);
   ui::TouchEvent touch_event(
       ui::ET_TOUCH_PRESSED, gfx::Point(), 0, base::TimeDelta());