Add support for HandleBlockingMessage to NaClMessageScanner

ppapi/tests/test_utils.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef PPAPI_TESTS_TEST_UTILS_H_
 #define PPAPI_TESTS_TEST_UTILS_H_
 
 #include <string>
 
 #include "ppapi/c/pp_instance.h"
@@ skipping 278 matching lines @@
 #else
 #error Please add support for your platform in ppapi/tests/test_utils.h
 #endif
 
 /* These are used to determine POSIX-like implementations vs Windows. */
 #if defined(__linux__) || defined(__APPLE__) || defined(__FreeBSD__) || \
     defined(__OpenBSD__) || defined(__sun) || defined(__native_client__)
 #define PPAPI_POSIX 1
 #endif
 
+// By default, ArrayBuffers over a certain size are sent via shared memory. In
+// order to test for this without sending huge buffers, tests can use this
+// class to set the minimum array buffer size used for shared memory temporarily
+// lower.
+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_;
+};
+
 #endif  // PPAPI_TESTS_TEST_UTILS_H_