pepper: add software vp9 encoder support to PPB_VideoEncoder

ppapi/tests/test_video_encoder.h

Index: ppapi/tests/test_video_encoder.h
diff --git a/ppapi/tests/test_video_encoder.h b/ppapi/tests/test_video_encoder.h
index f814f9e15e10f0ad46bde97ce365e6a08c5f28b0..6fb39ed17f2c92de6917f510b489b6949f23d6b8 100644
--- a/ppapi/tests/test_video_encoder.h
+++ b/ppapi/tests/test_video_encoder.h
@@ -20,7 +20,12 @@ class TestVideoEncoder : public TestCase {
   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_;