Update PPP side of Pepper CDM API to support video decoding.

ppapi/proxy/ppp_content_decryptor_private_proxy.h

Index: ppapi/proxy/ppp_content_decryptor_private_proxy.h
diff --git a/ppapi/proxy/ppp_content_decryptor_private_proxy.h b/ppapi/proxy/ppp_content_decryptor_private_proxy.h
index a9a8f22129542b59923fb3fb51fb8638d7f322ed..db7c51b29a44a825b0d2eb61798cd0d20fd96b14 100644
--- a/ppapi/proxy/ppp_content_decryptor_private_proxy.h
+++ b/ppapi/proxy/ppp_content_decryptor_private_proxy.h
@@ -42,10 +42,10 @@ class PPP_ContentDecryptor_Private_Proxy : public InterfaceProxy {
   void OnMsgDecrypt(PP_Instance instance,
                     const PPPDecryptor_Buffer& encrypted_buffer,
                     const std::string& serialized_encrypted_block_info);
-  void OnMsgDecryptAndDecode(
+  void OnMsgDecryptAndDecodeFrame(
       PP_Instance instance,
-      const PPPDecryptor_Buffer& encrypted_buffer,
-      const std::string& serialized_encrypted_block_info);
+      const PPPDecryptor_Buffer& encrypted_frame,
+      const std::string& serialized_encrypted_frame_info);
 
   const PPP_ContentDecryptor_Private* ppp_decryptor_impl_;