Add zoom functions and sendCommand.

b2060030
diff --git a/camera/libcameraservice/CameraHardwareStub.cpp b/camera/libcameraservice/CameraHardwareStub.cpp
index 35f4846..8ad1f69 100644
--- a/camera/libcameraservice/CameraHardwareStub.cpp
+++ b/camera/libcameraservice/CameraHardwareStub.cpp
@@ -368,6 +368,12 @@
     return mParameters;
 }
 
+status_t CameraHardwareStub::sendCommand(int32_t command, int32_t arg1,
+                                         int32_t arg2)
+{
+    return BAD_VALUE;
+}
+
 void CameraHardwareStub::release()
 {
 }