Add means for running some tests only o-o-p, add messaging o-o-p test.

ppapi/c/pp_macros.h

Index: ppapi/c/pp_macros.h
diff --git a/ppapi/c/pp_macros.h b/ppapi/c/pp_macros.h
index e5cd7dd0d5da0ff6f73cd8858ef5271f12ba9ce9..0427fe01fa8c601676a5dacbddfb1bcdc64fd00d 100644
--- a/ppapi/c/pp_macros.h
+++ b/ppapi/c/pp_macros.h
@@ -93,6 +93,14 @@ PP_COMPILE_ASSERT_SIZE_IN_BYTES_IMPL(NAME, struct NAME, SIZE)
 #define PP_COMPILE_ASSERT_ENUM_SIZE_IN_BYTES(NAME, SIZE) \
 PP_COMPILE_ASSERT_SIZE_IN_BYTES_IMPL(NAME, enum NAME, SIZE)
 
+/* These precompiler names were copied from chromium's build_config.h. */
+#if defined(__linux__) || defined(__APPLE__) || defined(__FreeBSD__) || \

[brettw, 2011/08/16 22:55:53]

I'd rather not have this in this shared header file. Is the thread header file
OK?

[dmichael (off chromium), 2011/08/17 21:15:15]

Done; that makes the most sense for this CL. I think we may eventually want to
move it back; I have a pp_synchronization.h not in this CL that will use it, and
I suspect we'll eventually want pp_thread.h and pp_synchronization.h to live in
ppapi/c.

+    defined(__OpenBSD__) || defined(__sun) || defined(__native_client__)
+#define PPAPI_HAS_POSIX_THREADS 1
+#elif defined (_MSC_VER)
+#define PPAPI_HAS_WINDOWS_THREADS 1
+#endif
+
 /**
  * @}
  * End of addtogroup PP