[telemetry] convert bitmaptools to use gyp

tools/telemetry/telemetry/core/bitmaptools/bitmaptools.cc

Index: tools/telemetry/telemetry/core/bitmaptools/bitmaptools.cc
diff --git a/tools/telemetry/telemetry/core/bitmaptools/bitmaptools.cc b/tools/telemetry/telemetry/core/bitmaptools/bitmaptools.cc
index aed92b6dac9def3d5897f9974ecad1538de372c5..a6867d5b20c0f528215b4f6e07303f45ada2d6c1 100644
--- a/tools/telemetry/telemetry/core/bitmaptools/bitmaptools.cc
+++ b/tools/telemetry/telemetry/core/bitmaptools/bitmaptools.cc
@@ -271,6 +271,12 @@ static PyMethodDef module_methods[] = {
   {NULL, NULL, 0, NULL}  /* sentinel */
 };
 
-PyMODINIT_FUNC initbitmaptools(void) {
+#if defined(WIN32)
+#define EXPORT __declspec(dllexport)
+#else
+#define EXPORT __attribute__((visibility("default")))
+#endif
+
+PyMODINIT_FUNC EXPORT initbitmaptools(void) {
   Py_InitModule("bitmaptools", module_methods);
 }