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

ppapi/tests/test_graphics_2d.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_2D_H_
 #define PAPPI_TESTS_TEST_GRAPHICS_2D_H_
 
 #include "ppapi/c/pp_stdint.h"
 #include "ppapi/tests/test_case.h"
 
 struct PPB_Graphics2D;
 struct PPB_ImageData;
 struct PPB_Testing_Dev;
 
 namespace pp {
 class Graphics2D;
 class ImageData;
 class Point;
 class Rect;
 }
 
 class TestGraphics2D : public TestCase {
  public:
   TestGraphics2D(TestingInstance* instance) : TestCase(instance) {}
 
   // TestCase implementation.
   virtual bool Init();
-  virtual void RunTest();
+  virtual void RunTests(const std::string& filter);
 
   void QuitMessageLoop();
 
  private:
   bool ReadImageData(const pp::Graphics2D& dc,
                      pp::ImageData* image,
                      const pp::Point& top_left) const;
 
   void FillRectInImage(pp::ImageData* image,
                        const pp::Rect& rect,
@@ skipping 39 matching lines @@
   std::string TestScroll();
   std::string TestReplace();
   std::string TestFlush();
 
   // Used by the tests that access the C API directly.
   const PPB_Graphics2D* graphics_2d_interface_;
   const PPB_ImageData* image_data_interface_;
 };
 
 #endif  // PAPPI_TESTS_TEST_GRAPHICS_2D_H_