Add PPAPI decryptor implementation.

ppapi/proxy/ppb_instance_proxy.h

Index: ppapi/proxy/ppb_instance_proxy.h
diff --git a/ppapi/proxy/ppb_instance_proxy.h b/ppapi/proxy/ppb_instance_proxy.h
index e2ac4d7d1f147fd3db915622e987d118d87ad61b..4f3de237b5459497584282139f59f94bec8771a8 100644
--- a/ppapi/proxy/ppb_instance_proxy.h
+++ b/ppapi/proxy/ppb_instance_proxy.h
@@ -101,6 +101,32 @@ class PPB_Instance_Proxy : public InterfaceProxy,
                                      const char* text,
                                      uint32_t caret,
                                      uint32_t anchor) OVERRIDE;
+  virtual void NeedKey(PP_Instance instance,
+                       PP_Var key_system,
+                       PP_Var session_id,
+                       PP_Var init_data) OVERRIDE;
+  virtual void KeyAdded(PP_Instance instance,
+                        PP_Var key_system,
+                        PP_Var session_id) OVERRIDE;
+  virtual void KeyMessage(PP_Instance instance,
+                          PP_Var key_system,
+                          PP_Var session_id,
+                          PP_Resource message,
+                          PP_Var default_url) OVERRIDE;
+  virtual void KeyError(PP_Instance instance,
+                        PP_Var key_system,
+                        PP_Var session_id,
+                        int32_t media_error,
+                        int32_t system_code) OVERRIDE;
+  virtual void DeliverBlock(PP_Instance instance,
+                            PP_Resource decrypted_block,
+                            int32_t request_id) OVERRIDE;
+  virtual void DeliverFrame(PP_Instance instance,
+                            PP_Resource decrypted_frame,
+                            int32_t request_id) OVERRIDE;
+  virtual void DeliverSamples(PP_Instance instance,
+                              PP_Resource decrypted_samples,
+                              int32_t request_id) OVERRIDE;
 
 #if !defined(OS_NACL)
   virtual PP_Var ResolveRelativeToDocument(
@@ -173,6 +199,34 @@ class PPB_Instance_Proxy : public InterfaceProxy,
       const std::string& text,
       uint32_t caret,
       uint32_t anchor);
+
+  virtual void OnHostMsgNeedKey(PP_Instance instance,
+                                SerializedVarReceiveInput key_system,
+                                SerializedVarReceiveInput session_id,
+                                SerializedVarReceiveInput init_data);
+  virtual void OnHostMsgKeyAdded(PP_Instance instance,
+                                 SerializedVarReceiveInput key_system,
+                                 SerializedVarReceiveInput session_id);
+  virtual void OnHostMsgKeyMessage(PP_Instance instance,
+                                   SerializedVarReceiveInput key_system,
+                                   SerializedVarReceiveInput session_id,
+                                   PP_Resource message,
+                                   SerializedVarReceiveInput default_url);
+  virtual void OnHostMsgKeyError(PP_Instance instance,
+                                 SerializedVarReceiveInput key_system,
+                                 SerializedVarReceiveInput session_id,
+                                 int32_t media_error,
+                                 int32_t system_code);
+  virtual void OnHostMsgDeliverBlock(PP_Instance instance,
+                                     PP_Resource decrypted_block,
+                                     int32_t request_id);
+  virtual void OnHostMsgDeliverFrame(PP_Instance instance,
+                                     PP_Resource decrypted_frame,
+                                     int32_t request_id);
+  virtual void OnHostMsgDeliverSamples(PP_Instance instance,
+                                       PP_Resource decrypted_samples,
+                                       int32_t request_id);
+
 #if !defined(OS_NACL)
   void OnHostMsgResolveRelativeToDocument(PP_Instance instance,
                                           SerializedVarReceiveInput relative,