Add support for HandleBlockingMessage to NaClMessageScanner

ppapi/tests/test_post_message.cc

Index: ppapi/tests/test_post_message.cc
diff --git a/ppapi/tests/test_post_message.cc b/ppapi/tests/test_post_message.cc
index da560cfff5d65c12187a2ca2264ab54598e929fd..da9c51d505ec7951ada2d9d57698988aed5799cb 100644
--- a/ppapi/tests/test_post_message.cc
+++ b/ppapi/tests/test_post_message.cc
@@ -130,23 +130,6 @@ bool VarsEqual(const pp::Var& expected,
   return VarsEqual(expected, actual, &visited_ids);
 }
 
-class ScopedArrayBufferSizeSetter {
- public:
-  ScopedArrayBufferSizeSetter(const PPB_Testing_Private* interface,
-                              PP_Instance instance,
-                              uint32_t threshold)
-     : interface_(interface),
-       instance_(instance) {
-    interface_->SetMinimumArrayBufferSizeForShmem(instance_, threshold);
-  }
-  ~ScopedArrayBufferSizeSetter() {
-    interface_->SetMinimumArrayBufferSizeForShmem(instance_, 0);
-  }
- private:
-  const PPB_Testing_Private* interface_;
-  PP_Instance instance_;
-};
-
 #define FINISHED_WAITING_MESSAGE "TEST_POST_MESSAGE_FINISHED_WAITING"
 
 }  // namespace