Support restricted mode in SensorService.

In restricted mode, only CTS tests can register for sensors or call flush() on them. The requests
from other applications will be ignored.

Change-Id: Ieb923df3e0cfe3390fe2d052af776da79589744b
diff --git a/include/gui/SensorManager.h b/include/gui/SensorManager.h
index 3176462..7d43273 100644
--- a/include/gui/SensorManager.h
+++ b/include/gui/SensorManager.h
@@ -40,7 +40,7 @@
 class ISensorServer;
 class Sensor;
 class SensorEventQueue;
-
+class String8;
 // ----------------------------------------------------------------------------
 
 class SensorManager :
@@ -53,7 +53,7 @@
 
     ssize_t getSensorList(Sensor const* const** list) const;
     Sensor const* getDefaultSensor(int type);
-    sp<SensorEventQueue> createEventQueue();
+    sp<SensorEventQueue> createEventQueue(String8 packageName = String8(""));
 
 private:
     // DeathRecipient interface