AI 149005: Change from ndk to platform's ndk (pndk), the ability to make your own java callable libraries to c code.

BUG=1857858

Automated import of CL 149005

pdk/pndk/samples/sample/hello_cpp.h

@@ -0,0 +1,12 @@
+#ifndef HELLO_CPP_H
+#define HELLO_CPP_H
+
+class Hello
+{
+public:
+    Hello();
+    ~Hello();
+    void printMessage(char* msg);
+};
+
+#endif