Support VTune's JIT interface.

runtime/vm/dart_api_impl_test.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "include/dart_api.h"
 #include "platform/assert.h"
 #include "platform/json.h"
 #include "platform/utils.h"
 #include "vm/class_finalizer.h"
 #include "vm/dart_api_impl.h"
@@ skipping 1996 matching lines @@
 
   // Garbage collect old space.  This should invoke the prologue
   // callback.  The prologue status value should change.
   global_prologue_callback_status = 3;
   global_epilogue_callback_status = 7;
   Isolate::Current()->heap()->CollectGarbage(Heap::kOld);
   EXPECT_EQ(6, global_prologue_callback_status);
   EXPECT_EQ(7, global_epilogue_callback_status);
 
   // Garbage collect old space again.  Callbacks are persistent so the
-  // prolog status value should change again.
+  // prologue status value should change again.
   Isolate::Current()->heap()->CollectGarbage(Heap::kOld);
   EXPECT_EQ(12, global_prologue_callback_status);
   EXPECT_EQ(7, global_epilogue_callback_status);
 
   // Add an epilogue callback.
   EXPECT_VALID(Dart_AddGcEpilogueCallback(&EpilogueCallbackTimes4));
 
   // Garbage collect new space.  This should not invoke the prologue
   // or the epilogue callback.  No status values should change.
   global_prologue_callback_status = 3;
@@ skipping 5352 matching lines @@
   Dart_LoadSource(TestCase::lib(), url, source);
 
   dart_args[0] = Dart_NewInteger(1);
   result = Dart_Invoke(lib1, NewString("start"), 1, dart_args);
   EXPECT_VALID(result);
 }
 
 #endif  // defined(TARGET_ARCH_IA32) || defined(TARGET_ARCH_X64).
 
 }  // namespace dart