Add a hang monitor for Pepper plugins

ppapi/example/example.cc

Index: ppapi/example/example.cc
diff --git a/ppapi/example/example.cc b/ppapi/example/example.cc
index 0832deedcbcd2801d8433f2c6a35e46948c9aed0..b345faf48a73540b2b6861c041e04c15a69d4531 100644
--- a/ppapi/example/example.cc
+++ b/ppapi/example/example.cc
@@ -6,6 +6,7 @@
 #include <stdio.h>  // FIXME(brettw) erase me.
 #ifndef _WIN32
 #include <sys/time.h>
+#include <unistd.h>
 #else
 #include <windows.h>
 #endif
@@ -190,6 +191,7 @@ class MyInstance : public pp::InstancePrivate, public MyFetcherClient {
   }
 
   virtual bool Init(uint32_t argc, const char* argn[], const char* argv[]) {
+    sleep(15);

[yzshen1, 2012/04/11 18:30:46]

This is not going to be checked in, right?
Besides, I think this doesn't work on Windows. You probably want to use
::Sleep(15*1000)

     return true;
   }