Switch display control betw. Android and Sidekick

Test: builds; Sidekick animates watch faces
Change-Id: I6ef1e91ed33b1790eed9a7b9af9bc6b6441c7de9
(cherry picked from commit 40f6f257f537b270be06a09a959202260cb53267)
diff --git a/services/java/com/android/server/SystemServer.java b/services/java/com/android/server/SystemServer.java
index de5d879..4f29aca 100644
--- a/services/java/com/android/server/SystemServer.java
+++ b/services/java/com/android/server/SystemServer.java
@@ -193,6 +193,8 @@
             "com.google.android.clockwork.ThermalObserver";
     private static final String WEAR_CONNECTIVITY_SERVICE_CLASS =
             "com.google.android.clockwork.connectivity.WearConnectivityService";
+    private static final String WEAR_SIDEKICK_SERVICE_CLASS =
+            "com.google.android.clockwork.sidekick.SidekickService";
     private static final String WEAR_DISPLAY_SERVICE_CLASS =
             "com.google.android.clockwork.display.WearDisplayService";
     private static final String WEAR_LEFTY_SERVICE_CLASS =
@@ -561,6 +563,13 @@
         mSystemServiceManager.startService(LightsService.class);
         traceEnd();
 
+        traceBeginAndSlog("StartSidekickService");
+        // Package manager isn't started yet; need to use SysProp not hardware feature
+        if (SystemProperties.getBoolean("config.enable_sidekick_graphics", false)) {
+            mSystemServiceManager.startService(WEAR_SIDEKICK_SERVICE_CLASS);
+        }
+        traceEnd();
+
         // Display manager is needed to provide display metrics before package manager
         // starts up.
         traceBeginAndSlog("StartDisplayManager");