Add a CHECK() around the SharedMemory ftruncate() call to finger it as a cras...

base/shared_memory_posix.cc

Index: base/shared_memory_posix.cc
===================================================================
--- base/shared_memory_posix.cc	(revision 30139)
+++ base/shared_memory_posix.cc	(working copy)
@@ -203,8 +203,10 @@
       return false;
     const size_t current_size = stat.st_size;
     if (current_size != size) {
-      if (ftruncate(fileno(fp), size) != 0)
-        return false;
+      // TODO(hawk): When finished with bug 16371, revert this CHECK() to:
+      // if (ftruncate(fileno(fp), size) != 0)
+      //   return false;
+      CHECK(!ftruncate(fileno(fp), size));
       if (fseeko(fp, size, SEEK_SET) != 0)
         return false;
     }