Add zoom functions and sendCommand.

b2060030
diff --git a/camera/libcameraservice/CameraHardwareStub.h b/camera/libcameraservice/CameraHardwareStub.h
index f957fa8..8a67024 100644
--- a/camera/libcameraservice/CameraHardwareStub.h
+++ b/camera/libcameraservice/CameraHardwareStub.h
@@ -57,6 +57,8 @@
     virtual status_t    dump(int fd, const Vector<String16>& args) const;
     virtual status_t    setParameters(const CameraParameters& params);
     virtual CameraParameters  getParameters() const;
+    virtual status_t    sendCommand(int32_t command, int32_t arg1,
+                                    int32_t arg2);
     virtual void release();
 
     static sp<CameraHardwareInterface> createInstance();