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

ppapi/tests/test_core.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_core.h"
 
 #if defined(_MSC_VER)
 #include <windows.h>
 #else
 #include <unistd.h>
@@ skipping 14 matching lines @@
 }
 
 }  // namespace
 
 REGISTER_TEST_CASE(Core);
 
 bool TestCore::Init() {
   return true;
 }
 
-void TestCore::RunTest() {
-  RUN_TEST(Time);
-  RUN_TEST(TimeTicks);
+void TestCore::RunTests(const std::string& filter) {
+  RUN_TEST(Time, filter);
+  RUN_TEST(TimeTicks, filter);
 }
 
 std::string TestCore::TestTime() {
   pp::Core* core = pp::Module::Get()->core();
   PP_Time time1 = core->GetTime();
   ASSERT_TRUE(time1 > 0);
 
   PlatformSleep(100);  // 0.1 second
 
   PP_Time time2 = core->GetTime();
   ASSERT_TRUE(time2 > time1);
 
   PASS();
 }
 
 std::string TestCore::TestTimeTicks() {
   pp::Core* core = pp::Module::Get()->core();
   PP_Time time1 = core->GetTimeTicks();
   ASSERT_TRUE(time1 > 0);
 
   PlatformSleep(100);  // 0.1 second
 
   PP_Time time2 = core->GetTimeTicks();
   ASSERT_TRUE(time2 > time1);
 
   PASS();
 }