Get rid of FE 1.0 classes usage in ConstraintIncorporator

compiler/fir/resolve/src/org/jetbrains/kotlin/fir/resolve/inference/ConeConstraintSystemUtilContext.kt

@@ -0,0 +1,16 @@
+/*
+ * Copyright 2010-2020 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * 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.fir.resolve.inference
+
+import org.jetbrains.kotlin.resolve.calls.inference.components.ConstraintSystemUtilContext
+import org.jetbrains.kotlin.types.model.TypeVariableMarker
+
+object ConeConstraintSystemUtilContext : ConstraintSystemUtilContext {
+    override fun TypeVariableMarker.shouldBeFlexible(): Boolean {
+        // TODO
+        return false
+    }
+}

compiler/fir/resolve/src/org/jetbrains/kotlin/fir/resolve/inference/InferenceComponents.kt

@@ -26,7 +26,7 @@ class InferenceComponents(
 ) {
     val approximator: AbstractTypeApproximator = object : AbstractTypeApproximator(ctx) {}
     val trivialConstraintTypeInferenceOracle = TrivialConstraintTypeInferenceOracle.create(ctx)
-    private val incorporator = ConstraintIncorporator(approximator, trivialConstraintTypeInferenceOracle)
+    private val incorporator = ConstraintIncorporator(approximator, trivialConstraintTypeInferenceOracle, ConeConstraintSystemUtilContext)
     private val injector = ConstraintInjector(incorporator, approximator, KotlinTypeRefiner.Default)
     val resultTypeResolver = ResultTypeResolver(approximator, trivialConstraintTypeInferenceOracle)