Do not use IR_EXTERNAL_JAVA_DECLARATION_STUB in DeclarationStubGenerator

This code is common across backends and it should not depend on
JVM-specific behavior. Introduce GeneratorExtensions to reverse the
dependency here

compiler/ir/ir.psi2ir/src/org/jetbrains/kotlin/psi2ir/Psi2IrTranslator.kt

@@ -20,13 +20,14 @@ import org.jetbrains.kotlin.config.LanguageVersionSettings
 import org.jetbrains.kotlin.descriptors.ModuleDescriptor
 import org.jetbrains.kotlin.ir.IrElement
 import org.jetbrains.kotlin.ir.declarations.IrModuleFragment
-import org.jetbrains.kotlin.ir.util.SymbolTable
 import org.jetbrains.kotlin.ir.util.IrDeserializer
+import org.jetbrains.kotlin.ir.util.SymbolTable
 import org.jetbrains.kotlin.ir.util.patchDeclarationParents
 import org.jetbrains.kotlin.ir.visitors.acceptVoid
 import org.jetbrains.kotlin.psi.KtFile
 import org.jetbrains.kotlin.psi2ir.generators.AnnotationGenerator
 import org.jetbrains.kotlin.psi2ir.generators.GeneratorContext
+import org.jetbrains.kotlin.psi2ir.generators.GeneratorExtensions
 import org.jetbrains.kotlin.psi2ir.generators.ModuleGenerator
 import org.jetbrains.kotlin.psi2ir.transformations.insertImplicitCasts
 import org.jetbrains.kotlin.resolve.BindingContext
@@ -46,13 +47,23 @@ class Psi2IrTranslator(
         postprocessingSteps.add(step)
     }
 
-    fun generateModule(moduleDescriptor: ModuleDescriptor, ktFiles: Collection<KtFile>, bindingContext: BindingContext): IrModuleFragment {
-        val context = createGeneratorContext(moduleDescriptor, bindingContext)
+    fun generateModule(
+        moduleDescriptor: ModuleDescriptor,
+        ktFiles: Collection<KtFile>,
+        bindingContext: BindingContext,
+        generatorExtensions: GeneratorExtensions
+    ): IrModuleFragment {
+        val context = createGeneratorContext(moduleDescriptor, bindingContext, extensions = generatorExtensions)
         return generateModuleFragment(context, ktFiles)
     }
 
-    fun createGeneratorContext(moduleDescriptor: ModuleDescriptor, bindingContext: BindingContext, symbolTable: SymbolTable = SymbolTable()) =
-        GeneratorContext(configuration, moduleDescriptor, bindingContext, languageVersionSettings, symbolTable)
+    fun createGeneratorContext(
+        moduleDescriptor: ModuleDescriptor,
+        bindingContext: BindingContext,
+        symbolTable: SymbolTable = SymbolTable(),
+        extensions: GeneratorExtensions = GeneratorExtensions()
+    ): GeneratorContext =
+        GeneratorContext(configuration, moduleDescriptor, bindingContext, languageVersionSettings, symbolTable, extensions)
 
     fun generateModuleFragment(context: GeneratorContext, ktFiles: Collection<KtFile>, deserializer: IrDeserializer? = null): IrModuleFragment {
         val moduleGenerator = ModuleGenerator(context)

compiler/ir/ir.psi2ir/src/org/jetbrains/kotlin/psi2ir/generators/GeneratorContext.kt

@@ -35,7 +35,8 @@ class GeneratorContext(
     val moduleDescriptor: ModuleDescriptor,
     val bindingContext: BindingContext,
     val languageVersionSettings: LanguageVersionSettings,
-    val symbolTable: SymbolTable = SymbolTable()
+    val symbolTable: SymbolTable,
+    val extensions: GeneratorExtensions
 ) : IrGeneratorContext() {
 
     val constantValueGenerator: ConstantValueGenerator = ConstantValueGenerator(moduleDescriptor, symbolTable)

compiler/ir/ir.psi2ir/src/org/jetbrains/kotlin/psi2ir/generators/GeneratorExtensions.kt

@@ -0,0 +1,14 @@
+/*
+ * Copyright 2010-2019 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license
+ * that can be found in the license/LICENSE.txt file.
+ */
+
+package org.jetbrains.kotlin.psi2ir.generators
+
+import org.jetbrains.kotlin.descriptors.DeclarationDescriptor
+import org.jetbrains.kotlin.ir.declarations.IrDeclarationOrigin
+
+open class GeneratorExtensions {
+    open val externalDeclarationOrigin: ((DeclarationDescriptor) -> IrDeclarationOrigin)?
+        get() = null
+}

compiler/ir/ir.psi2ir/src/org/jetbrains/kotlin/psi2ir/generators/ModuleGenerator.kt

@@ -44,7 +44,7 @@ class ModuleGenerator(override val context: GeneratorContext) : Generator {
 
     fun generateUnboundSymbolsAsDependencies(irModule: IrModuleFragment, deserializer: IrDeserializer? = null) {
         ExternalDependenciesGenerator(
-            irModule.descriptor, context.symbolTable, context.irBuiltIns, deserializer
+            irModule.descriptor, context.symbolTable, context.irBuiltIns, context.extensions.externalDeclarationOrigin, deserializer
         ).generateUnboundSymbolsAsDependencies(irModule, context.bindingContext)
     }