Make PPAPI PostMessage behave asynchronously.

chrome/test/ui/ppapi_uitest.cc

Index: chrome/test/ui/ppapi_uitest.cc
===================================================================
--- chrome/test/ui/ppapi_uitest.cc	(revision 79483)
+++ chrome/test/ui/ppapi_uitest.cc	(working copy)
@@ -154,6 +154,10 @@
   RunTest("Var");
 }
 
+TEST_F(PPAPITest, PostMessage) {
+  RunTest("PostMessage");
+}
+
 TEST_F(PPAPITest, FileIO) {
   RunTestViaHTTP("FileIO");
 }