Set up NaClChromeMainArgs number_of_cores member so apps can size threadpools appropriately

chrome/test/data/nacl/sysconf_nprocessors_onln/sysconf_nprocessors_onln_test.cc

Index: chrome/test/data/nacl/sysconf_nprocessors_onln/sysconf_nprocessors_onln_test.cc
diff --git a/chrome/test/data/nacl/exit_status/pm_exit_status_test.cc b/chrome/test/data/nacl/sysconf_nprocessors_onln/sysconf_nprocessors_onln_test.cc
similarity index 69%
copy from chrome/test/data/nacl/exit_status/pm_exit_status_test.cc
copy to chrome/test/data/nacl/sysconf_nprocessors_onln/sysconf_nprocessors_onln_test.cc
index d1289cf060f55021a9d4af5f4c064f8697cd4594..86785ae9c543849087f5637a03ce2621c2e11f2b 100644
--- a/chrome/test/data/nacl/exit_status/pm_exit_status_test.cc
+++ b/chrome/test/data/nacl/sysconf_nprocessors_onln/sysconf_nprocessors_onln_test.cc
@@ -5,54 +5,32 @@
  */
 
 /*
- * Post-message based test for testing crash detection.
+ * Post-message based test for simple rpc based access to sysconf result.
  */
-#include <string>
 
 #include <assert.h>
+#include <inttypes.h>
 #include <stdio.h>
 #include <stdlib.h>
-#include <inttypes.h>
-#include <sys/fcntl.h>
 #include <string.h>
+#include <sys/fcntl.h>
 #include <unistd.h>
 
 #include <sys/nacl_syscalls.h>
 
+#include <string>
+
 #include "ppapi/cpp/instance.h"
 #include "ppapi/cpp/module.h"
 #include "ppapi/cpp/var.h"
 
-void Initialize(const pp::Var& message_data, std::string* out) {
-  *out = "hello world";
-}
-
-void RunExit0(const pp::Var& message_data, std::string* out) {
-  *out = "good bye cruel world";
-  // the out string should not actually get sent back in reply, since
-  // we exit immediately.
-  exit(0);
-}
-
-void RunExit7(const pp::Var& message_data, std::string* out) {
-  *out = "good bye cruel world";
-  // the out string should not actually get sent back in reply, since
-  // we exit immediately.
-  exit(7);
-}
-
-void RunExit254(const pp::Var& message_data, std::string* out) {
-  *out = "good bye cruel world";
-  // the out string should not actually get sent back in reply, since
-  // we exit immediately.
-  exit(254);
-}
+void NumProcessors(const pp::Var& message_data, std::string* sb) {
+  int num_cores;
+  char string_rep[16];
 
-void RunExitNeg2(const pp::Var& message_data, std::string* out) {
-  *out = "good bye cruel world";
-  // the out string should not actually get sent back in reply, since
-  // we exit immediately.
-  exit(-2);
+  num_cores = sysconf(_SC_NPROCESSORS_ONLN);
+  snprintf(string_rep, sizeof string_rep, "%d", num_cores);
+  *sb = string_rep;
 }
 
 struct PostMessageHandlerDesc {
@@ -74,11 +52,7 @@ class MyInstance : public pp::Instance {
 // reply string -- essentially treating this as a string-based RPC.
 void MyInstance::HandleMessage(const pp::Var& message_data) {
   static struct PostMessageHandlerDesc kMsgHandlers[] = {
-    { "init", Initialize },
-    { "exit0", RunExit0 },
-    { "exit7", RunExit7 },
-    { "exit254", RunExit254 },
-    { "exitneg2", RunExitNeg2 },
+    { "nprocessors", NumProcessors },
     { reinterpret_cast<char const *>(NULL),
       reinterpret_cast<void (*)(const pp::Var&, std::string*)>(NULL) }
   };
@@ -128,7 +102,6 @@ namespace pp {
 
 // Factory function for your specialization of the Module object.
 Module* CreateModule() {
-  printf("hello world from CreateModule\n"); fflush(NULL);
   return new MyModule();
 }