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

ppapi/tests/test_instance_deprecated.h

 // Copyright (c) 2010 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.
 
 #ifndef PPAPI_TESTS_TEST_INSTANCE_H_
 #define PPAPI_TESTS_TEST_INSTANCE_H_
 
 #include <string>
 #include <vector>
 
 #include "ppapi/tests/test_case.h"
 
 class TestInstance : public TestCase {
  public:
   TestInstance(TestingInstance* instance);
 
   // TestCase implementation.
   virtual bool Init();
-  virtual void RunTest();
+  virtual void RunTests(const std::string& filter);
 
   void set_string(const std::string& s) { string_ = s; }
 
  protected:
   // Test case protected overrides.
   virtual pp::deprecated::ScriptableObject* CreateTestObject();
 
  private:
   std::string TestExecuteScript();
 
   // Value written by set_string which is called by the ScriptableObject. This
   // allows us to keep track of what was called.
   std::string string_;
 };
 
 #endif  // PPAPI_TESTS_TEST_INSTANCE_H_