Add CDM video decoder.

webkit/media/crypto/ppapi/clear_key_cdm.cc

Index: webkit/media/crypto/ppapi/clear_key_cdm.cc
diff --git a/webkit/media/crypto/ppapi/clear_key_cdm.cc b/webkit/media/crypto/ppapi/clear_key_cdm.cc
index 835d06258a28020d9ae7612b75ed15c63a2293a9..cf7cd3a2c2ebb0acf7c56d7423fd189e92a0f370 100644
--- a/webkit/media/crypto/ppapi/clear_key_cdm.cc
+++ b/webkit/media/crypto/ppapi/clear_key_cdm.cc
@@ -10,6 +10,7 @@
 #include "base/logging.h"
 #include "base/time.h"
 #include "media/base/decoder_buffer.h"
+#include "webkit/media/crypto/decoders/ffmpeg_video_decoder.h"
 
 static const char kClearKeyCdmVersion[] = "0.1.0.0";
 
@@ -216,4 +217,17 @@ cdm::Status ClearKeyCdm::Decrypt(
   return cdm::kSuccess;
 }
 
+cdm::Status ClearKeyCdm::InitializeVideoDecoder(
+    const cdm::VideoDecoderConfig& video_decoder_config) {
+  video_decoder_.reset(new webkit_media::FFmpegVideoDecoder);
+  //video_decoder_->Initialize();
+  return cdm::kErrorUnknown;
+}
+
+cdm::Status ClearKeyCdm::DecryptAndDecode(
+    const cdm::InputBuffer& encrypted_buffer,
+    cdm::VideoFrame* video_frame) {
+  return cdm::kErrorUnknown;
+}
+
 }  // namespace webkit_media