ash: Restore user selected rotation on startup

ash/display/display_manager_unittest.cc

Index: ash/display/display_manager_unittest.cc
diff --git a/ash/display/display_manager_unittest.cc b/ash/display/display_manager_unittest.cc
index e814b3f896d4234f6f5136e8a0a3000591337425..bb8dafe8fd05e542a99380bde98a06ad3f688ca5 100644
--- a/ash/display/display_manager_unittest.cc
+++ b/ash/display/display_manager_unittest.cc
@@ -1761,6 +1761,20 @@ TEST_F(DisplayManagerFontTest,
   DisplayInfo::SetUse125DSFForUIScaling(false);
 }
 
+TEST_F(DisplayManagerTest, CheckInitializationOfRotationProperty) {
+  int64_t id = display_manager()->GetDisplayAt(0).id();
+  display_manager()->RegisterDisplayProperty(id, gfx::Display::ROTATE_90, 1.0f,
+                                             nullptr, gfx::Size(), 1.0f,
+                                             ui::COLOR_PROFILE_STANDARD);
+
+  const DisplayInfo& info = display_manager()->GetDisplayInfo(id);
+
+  EXPECT_EQ(gfx::Display::ROTATE_90,
+            info.GetRotation(gfx::Display::ROTATION_SOURCE_USER));
+  EXPECT_EQ(gfx::Display::ROTATE_90,
+            info.GetRotation(gfx::Display::ROTATION_SOURCE_ACTIVE));
+}
+
 #endif  // OS_CHROMEOS
 
 }  // namespace ash