On resume perform a delayed call to SetDisplayPower()

ui/display/chromeos/display_configurator_unittest.cc

Index: ui/display/chromeos/display_configurator_unittest.cc
diff --git a/ui/display/chromeos/display_configurator_unittest.cc b/ui/display/chromeos/display_configurator_unittest.cc
index e55845f9e2e993f28ffac1d7aee94028df975345..7705445a1d7958a1d96bdefb51394b2d8ed9c536 100644
--- a/ui/display/chromeos/display_configurator_unittest.cc
+++ b/ui/display/chromeos/display_configurator_unittest.cc
@@ -848,6 +848,7 @@ TEST_F(DisplayConfiguratorTest, SuspendAndResume) {
   configurator_.SuspendDisplays();
   EXPECT_EQ(kNoActions, log_->GetActionsAndClear());
   configurator_.ResumeDisplays();
+  EXPECT_TRUE(test_api_.TriggerConfigureTimeout());
   EXPECT_EQ(
       JoinActions(
           kGrab,
@@ -884,6 +885,7 @@ TEST_F(DisplayConfiguratorTest, SuspendAndResume) {
       log_->GetActionsAndClear());
 
   configurator_.ResumeDisplays();
+  EXPECT_TRUE(test_api_.TriggerConfigureTimeout());
   EXPECT_EQ(
       JoinActions(
           kGrab,
@@ -929,6 +931,7 @@ TEST_F(DisplayConfiguratorTest, SuspendAndResume) {
   // pick up the change.
   UpdateOutputs(1, false);
   configurator_.ResumeDisplays();
+  EXPECT_TRUE(test_api_.TriggerConfigureTimeout());
   EXPECT_EQ(
       JoinActions(
           kGrab,