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

ppapi/tests/test_file_system.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_file_system.h"
 
 #include <string.h>
 
 #include "ppapi/c/pp_errors.h"
 #include "ppapi/cpp/file_system.h"
 #include "ppapi/tests/test_utils.h"
 #include "ppapi/tests/testing_instance.h"
 
 REGISTER_TEST_CASE(FileSystem);
 
 bool TestFileSystem::Init() {
   return InitTestingInterface() && EnsureRunningOverHTTP();
 }
 
-void TestFileSystem::RunTest() {
-  RUN_TEST_FORCEASYNC_AND_NOT(Open);
-  RUN_TEST_FORCEASYNC_AND_NOT(MultipleOpens);
+void TestFileSystem::RunTests(const std::string& filter) {
+  RUN_TEST_FORCEASYNC_AND_NOT(Open, filter);
+  RUN_TEST_FORCEASYNC_AND_NOT(MultipleOpens, filter);
 }
 
 std::string TestFileSystem::TestOpen() {
   TestCompletionCallback callback(instance_->pp_instance(), force_async_);
 
   // Open.
   pp::FileSystem file_system(instance_, PP_FILESYSTEMTYPE_LOCALTEMPORARY);
   int32_t rv = file_system.Open(1024, callback);
   if (rv == PP_OK_COMPLETIONPENDING)
     rv = callback.WaitForResult();
@@ skipping 48 matching lines @@
   int32_t rv_3 = file_system.Open(1024, callback_3);
   if (force_async_ && rv_3 != PP_OK_COMPLETIONPENDING)
     return ReportError("FileSystem::Open3 force_async", rv_3);
   if (rv_3 == PP_OK_COMPLETIONPENDING)
     rv_3 = callback_3.WaitForResult();
   if (rv_3 == PP_OK)
     return "FileSystem::Open3 should not allow multiple opens.";
 
   PASS();
 }