Add decoder de-initialize and reset to the Pepper CDM API.

ppapi/proxy/ppapi_messages.h

Index: ppapi/proxy/ppapi_messages.h
diff --git a/ppapi/proxy/ppapi_messages.h b/ppapi/proxy/ppapi_messages.h
index 8ac08863f259be2ea620d0b02120d4302ba24e45..f4240172afdac79746092f39c7ed2515c6686c7a 100644
--- a/ppapi/proxy/ppapi_messages.h
+++ b/ppapi/proxy/ppapi_messages.h
@@ -624,6 +624,12 @@ IPC_MESSAGE_ROUTED3(PpapiMsg_PPPContentDecryptor_Decrypt,
                     PP_Instance /* instance */,
                     ppapi::proxy::PPPDecryptor_Buffer /* buffer */,
                     std::string /* serialized_block_info */)
+IPC_MESSAGE_ROUTED2(PpapiMsg_PPPContentDecryptor_ResetVideoDecoder,
+                    PP_Instance /* instance */,
+                    uint32_t /* request_id */)
+IPC_MESSAGE_ROUTED2(PpapiMsg_PPPContentDecryptor_StopVideoDecoder,
+                    PP_Instance /* instance */,
+                    uint32_t /* request_id */)
 IPC_MESSAGE_ROUTED3(PpapiMsg_PPPContentDecryptor_DecryptAndDecodeFrame,
                     PP_Instance /* instance */,
                     ppapi::proxy::PPPDecryptor_Buffer /* buffer */,
@@ -1209,6 +1215,12 @@ IPC_MESSAGE_ROUTED3(PpapiHostMsg_PPBInstance_DeliverBlock,
                     PP_Instance /* instance */,
                     PP_Resource /* decrypted_block, PPB_Buffer_Dev */,
                     std::string /* serialized_block_info */)
+IPC_MESSAGE_ROUTED2(PpapiHostMsg_PPBInstance_DecoderReset,
+                    PP_Instance /* instance */,
+                    uint32_t /* request_id */)
+IPC_MESSAGE_ROUTED2(PpapiHostMsg_PPBInstance_DecoderStopped,
+                    PP_Instance /* instance */,
+                    uint32_t /* request_id */)
 IPC_MESSAGE_ROUTED3(PpapiHostMsg_PPBInstance_DeliverFrame,
                     PP_Instance /* instance */,
                     PP_Resource /* decrypted_frame, PPB_Buffer_Dev */,