pepper: add software vp9 encoder support to PPB_VideoEncoder

ppapi/tests/test_video_encoder.h

 // Copyright 2015 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_VIDEO_ENCODER_H_
 #define PPAPI_TESTS_TEST_VIDEO_ENCODER_H_
 
 #include <string>
 
 #include "ppapi/c/pp_stdint.h"
 #include "ppapi/c/ppb_video_encoder.h"
 #include "ppapi/tests/test_case.h"
 
 class TestVideoEncoder : public TestCase {
  public:
   explicit TestVideoEncoder(TestingInstance* instance) : TestCase(instance) {}
 
  private:
   // TestCase implementation.
   virtual bool Init();
   virtual void RunTests(const std::string& filter);
 
-  std::string TestCreate();
+  std::string TestAvailableCodecs();
+  std::string TestIncorrectSizeFails();
+  std::string TestInitializeVP8();
+  std::string TestInitializeVP9();
+
+  std::string TestInitializeCodec(PP_VideoProfile profile);
 
   // Used by the tests that access the C API directly.
   const PPB_VideoEncoder_0_1* video_encoder_interface_;
 };
 
 #endif  // PPAPI_TESTS_TEST_VIDEO_ENCODER_H_