Make it possible to enable/disable specific ppapi tests. Migrate PostMessage tests.

ppapi/tests/test_directory_reader.cc

 // Copyright (c) 2011 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.
 
 #include "ppapi/tests/test_directory_reader.h"
 
 #include <stdio.h>
 #include <set>
 #include <vector>
 
@@ skipping 57 matching lines @@
     rv = callback->WaitForResult();
   return rv;
 }
 
 }  // namespace
 
 bool TestDirectoryReader::Init() {
   return InitTestingInterface() && EnsureRunningOverHTTP();
 }
 
-void TestDirectoryReader::RunTest() {
-  RUN_TEST(GetNextFile);
+void TestDirectoryReader::RunTests(const std::string& filter) {
+  RUN_TEST(GetNextFile, filter);
 }
 
 std::string TestDirectoryReader::TestGetNextFile() {
   TestCompletionCallback callback(instance_->pp_instance(), force_async_);
   pp::FileSystem file_system(
       instance_, PP_FILESYSTEMTYPE_LOCALTEMPORARY);
   int32_t rv = file_system.Open(1024, callback);
   if (force_async_ && rv != PP_OK_COMPLETIONPENDING)
     return ReportError("FileSystem::Open force_async", rv);
   if (rv == PP_OK_COMPLETIONPENDING)
@@ skipping 126 matching lines @@
         return "DirectoryReader::GetNextEntry not aborted.";
       if (entry.is_null() != entry_is_null)
         return "DirectoryReader::GetNextEntry wrote result after destruction.";
     } else if (rv != PP_OK) {
       return ReportError("DirectoryReader::GetNextEntry", rv);
     }
   }
 
   PASS();
 }