Define android windowing data so it will at least compile

renderdoc/driver/gl/gl_common.h

@@ -47,7 +47,7 @@ struct GLWindowingData
 	HWND wnd;
 };
 
-#elif defined(RENDERDOC_PLATFORM_POSIX)
+#elif defined(RENDERDOC_PLATFORM_LINUX)
 // cheeky way to prevent GL/gl.h from being included, as we want to use
 // glcorearb.h from above
 #define __gl_h_
@@ -65,6 +65,20 @@ struct GLWindowingData
 	GLXDrawable wnd;
 };
 
+#elif defined(RENDERDOC_PLATFORM_ANDROID)
+
+#include "EGL/egl.h"
+#include "EGL/eglext.h"
+
+struct GLWindowingData
+{
+	GLWindowingData() { ctx = NULL; wnd = 0; }
+
+	void SetCtx(void *c) { ctx = (void*)c; }
+	EGLContext ctx;
+	ANativeWindow *wnd;
+};
+
 #else
 #error "Unknown platform"
 #endif