JVM_IR: avoid double encoding of byte strings

IrLibraryFile, ingerited from Klib code, needed types, bodies, strings,
signatures encoded as byte strings.
When we store this data as class annotations, it is better to store it
as protobuf structs, to avoid re-encoding byte streams twice.

compiler/ir/backend.js/src/org/jetbrains/kotlin/ir/backend/js/ic/invalidation.kt

@@ -6,7 +6,8 @@
 package org.jetbrains.kotlin.ir.backend.js.ic
 
 import org.jetbrains.kotlin.backend.common.serialization.IdSignatureDeserializer
-import org.jetbrains.kotlin.backend.common.serialization.IrLibraryFile
+import org.jetbrains.kotlin.backend.common.serialization.IrLibraryBytesSource
+import org.jetbrains.kotlin.backend.common.serialization.IrLibraryFileFromBytes
 import org.jetbrains.kotlin.backend.common.serialization.codedInputStream
 import org.jetbrains.kotlin.backend.common.serialization.signature.IdSignatureDescriptor
 import org.jetbrains.kotlin.config.CompilerConfiguration
@@ -121,7 +122,7 @@ private fun KotlinLibrary.filesAndSigReaders(): List<Pair<String, IdSignatureDes
     for (i in 0 until fileSize) {
         val fileStream = file(i).codedInputStream
         val fileProto = ProtoFile.parseFrom(fileStream, extReg)
-        val sigReader = IdSignatureDeserializer(object : IrLibraryFile() {
+        val sigReader = IdSignatureDeserializer(IrLibraryFileFromBytes(object : IrLibraryBytesSource() {
             private fun err(): Nothing = error("Not supported")
             override fun irDeclaration(index: Int): ByteArray = err()
 
@@ -134,7 +135,7 @@ private fun KotlinLibrary.filesAndSigReaders(): List<Pair<String, IdSignatureDes
             override fun body(index: Int): ByteArray = err()
 
             override fun debugInfo(index: Int): ByteArray? = null
-        }, null)
+        }), null)
 
         result.add(fileProto.fileEntry.name to sigReader)
     }