New J2K: Add ForIn statement conversion

j2k/newSrc/org/jetbrains/kotlin/j2k/ConversionsRunner.kt

@@ -54,6 +54,7 @@ object ConversionsRunner {
             +SwitchStatementConversion(context)
             +InstanceOfConversion()
             +ForConversion(context)
+            +ForInConversion()
             +LabeledStatementConversion()
             +SortClassMembersConversion()
         }

j2k/newSrc/org/jetbrains/kotlin/j2k/conversions/ForInConversion.kt

@@ -0,0 +1,27 @@
+/*
+ * Copyright 2010-2018 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.j2k.conversions
+
+import com.intellij.psi.*
+import org.jetbrains.kotlin.j2k.*
+import org.jetbrains.kotlin.j2k.tree.*
+import org.jetbrains.kotlin.j2k.tree.impl.*
+import org.jetbrains.kotlin.lexer.KtTokens
+import org.jetbrains.kotlin.name.ClassId
+
+
+class ForInConversion : RecursiveApplicableConversionBase() {
+    override fun applyToElement(element: JKTreeElement): JKTreeElement {
+        if (element !is JKForInStatement) return recurse(element)
+
+        val parameterDeclaration = element.declaration as? JKParameter
+        if (parameterDeclaration != null) {
+            parameterDeclaration.type = JKTypeElementImpl(JKNoTypeImpl)
+        }
+
+        return recurse(element)
+    }
+}