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

ppapi/tests/test_graphics_3d.h

 // 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.
 
 #ifndef PAPPI_TESTS_TEST_GRAPHICS_3D_H_
 #define PAPPI_TESTS_TEST_GRAPHICS_3D_H_
 
 #include <string>
 #include "ppapi/tests/test_case.h"
 
 struct PPB_OpenGLES2;
 
 namespace pp {
 class Graphics3D;
 }  // namespace pp
 
 class TestGraphics3D : public TestCase {
  public:
   TestGraphics3D(TestingInstance* instance) : TestCase(instance) {}
 
   // TestCase implementation.
   virtual bool Init();
-  virtual void RunTest();
+  virtual void RunTests(const std::string& filter);
 
  private:
   // Various tests.
   std::string TestFrame();
 
   // Utils used by various tests.
   int32_t SwapBuffersSync(pp::Graphics3D* context);
   std::string TestPixel(pp::Graphics3D* context,
                         int x, int y, const uint8_t expected_color[4]);
 
   // OpenGL ES2 interface.
   const PPB_OpenGLES2* opengl_es2_;
 };
 
 #endif  // PAPPI_TESTS_TEST_GRAPHICS_3D_H_