Possible fix for autoclick test flakes.

ash/autoclick/autoclick_unittest.cc

Index: ash/autoclick/autoclick_unittest.cc
diff --git a/ash/autoclick/autoclick_unittest.cc b/ash/autoclick/autoclick_unittest.cc
index c0610a44b4886efc34445914b51a19108e51ed91..9c04670a0548fdcbc0cd50480bea26ed08d555a2 100644
--- a/ash/autoclick/autoclick_unittest.cc
+++ b/ash/autoclick/autoclick_unittest.cc
@@ -3,6 +3,7 @@
 // found in the LICENSE file.
 
 #include "ash/autoclick/autoclick_controller.h"
+#include "ash/display/display_manager.h"
 #include "ash/shell.h"
 #include "ash/test/ash_test_base.h"
 #include "ui/aura/test/test_window_delegate.h"
@@ -66,6 +67,11 @@ class AutoclickTest : public test::AshTestBase {
 
     // Move mouse to deterministic location at the start of each test.
     GetEventGenerator().MoveMouseTo(100, 100);
+
+    // Make sure the display is initialized so we don't fail the test due to any
+    // input events caused from creating the display.
+    Shell::GetInstance()->display_manager()->UpdateDisplays();
+    RunAllPendingInMessageLoop();
   }
 
   void TearDown() override {