[NaCl SDK] Allow ppapi_simple executables to run in both sel_ldr and in chrome.

native_client_sdk/src/examples/tutorial/using_ppapi_simple/hello_world.c

Index: native_client_sdk/src/examples/tutorial/using_ppapi_simple/hello_world.c
diff --git a/native_client_sdk/src/examples/tutorial/using_ppapi_simple/hello_world.c b/native_client_sdk/src/examples/tutorial/using_ppapi_simple/hello_world.c
index 10322d01b0fb2e6aaec3d7fd5c3789b707c8eb56..31e88fa515990375250a7b06a78c2169b29a8af7 100644
--- a/native_client_sdk/src/examples/tutorial/using_ppapi_simple/hello_world.c
+++ b/native_client_sdk/src/examples/tutorial/using_ppapi_simple/hello_world.c
@@ -8,10 +8,6 @@
 
 #include "ppapi_simple/ps_main.h"
 
-#ifdef SEL_LDR
-#define example_main main
-#endif
-
 int example_main(int argc, char* argv[]) {
   /* Use ppb_messaging to send "Hello World" to JavaScript. */
   printf("Hello World STDOUT.\n");
@@ -28,6 +24,4 @@ int example_main(int argc, char* argv[]) {
  * This is not needed when building the sel_ldr version of this example
  * which does not link against ppapi_simple.
  */
-#ifndef SEL_LDR
 PPAPI_SIMPLE_REGISTER_MAIN(example_main)
-#endif