Add property to disable camera service proxy.

This service proxy (together with the native server) are not needed on
Android Wear, as we don't have any watches with cameras.

Bug: 28560707
Change-Id: Ie4a830a3ba48c90d3e968fc5cdf57ccafcc1f5d8
diff --git a/services/java/com/android/server/SystemServer.java b/services/java/com/android/server/SystemServer.java
index 53117e1..812b226 100644
--- a/services/java/com/android/server/SystemServer.java
+++ b/services/java/com/android/server/SystemServer.java
@@ -548,12 +548,14 @@
                 false);
         boolean disableTrustManager = SystemProperties.getBoolean("config.disable_trustmanager",
                 false);
-        boolean disableTextServices = SystemProperties.getBoolean("config.disable_textservices", false);
+        boolean disableTextServices = SystemProperties.getBoolean("config.disable_textservices",
+                false);
         boolean disableSamplingProfiler = SystemProperties.getBoolean("config.disable_samplingprof",
                 false);
-
         boolean disableConsumerIr = SystemProperties.getBoolean("config.disable_consumerir", false);
         boolean disableVrManager = SystemProperties.getBoolean("config.disable_vrmanager", false);
+        boolean disableCameraService = SystemProperties.getBoolean("config.disable_cameraservice",
+                false);
 
         boolean isEmulator = SystemProperties.get("ro.kernel.qemu").equals("1");
 
@@ -578,8 +580,10 @@
 
             mContentResolver = context.getContentResolver();
 
-            Slog.i(TAG, "Camera Service");
-            mSystemServiceManager.startService(CameraService.class);
+            if (!disableCameraService) {
+                Slog.i(TAG, "Camera Service");
+                mSystemServiceManager.startService(CameraService.class);
+            }
 
             // The AccountManager must come before the ContentService
             traceBeginAndSlog("StartAccountManagerService");