Backend: remove codegen factory from generation state

use it explicitly. This is a step in attempt to abstract dependencies
on PSI in the GenerationState and related places.

compiler/backend/src/org/jetbrains/kotlin/codegen/KotlinCodegenFacade.java

@@ -25,7 +25,7 @@ import org.jetbrains.kotlin.psi.KtFile;
 import java.util.Collection;
 
 public class KotlinCodegenFacade {
-    public static void compileCorrectFiles(@NotNull GenerationState state) {
+    public static void compileCorrectFiles(@NotNull GenerationState state, CodegenFactory codegenFactory) {
         ProgressIndicatorAndCompilationCanceledStatus.checkCanceled();
 
         state.beforeCompile();
@@ -33,11 +33,11 @@ public class KotlinCodegenFacade {
         ProgressIndicatorAndCompilationCanceledStatus.checkCanceled();
 
         CodegenFactory.IrConversionInput psi2irInput = CodegenFactory.IrConversionInput.Companion.fromGenerationState(state);
-        CodegenFactory.BackendInput backendInput = state.getCodegenFactory().convertToIr(psi2irInput);
+        CodegenFactory.BackendInput backendInput = codegenFactory.convertToIr(psi2irInput);
 
         ProgressIndicatorAndCompilationCanceledStatus.checkCanceled();
 
-        state.getCodegenFactory().generateModule(state, backendInput);
+        codegenFactory.generateModule(state, backendInput);
 
         CodegenFactory.Companion.doCheckCancelled(state);
         state.getFactory().done();

compiler/backend/src/org/jetbrains/kotlin/codegen/state/GenerationState.kt

@@ -62,7 +62,6 @@ class GenerationState private constructor(
     val files: List<KtFile>,
     val configuration: CompilerConfiguration,
     val generateDeclaredClassFilter: GenerateClassFilter,
-    val codegenFactory: CodegenFactory,
     val targetId: TargetId?,
     moduleName: String?,
     val outDirectory: File?,
@@ -86,10 +85,6 @@ class GenerationState private constructor(
         fun generateDeclaredClassFilter(v: GenerateClassFilter) =
             apply { generateDeclaredClassFilter = v }
 
-        private var codegenFactory: CodegenFactory = DefaultCodegenFactory
-        fun codegenFactory(v: CodegenFactory) =
-            apply { codegenFactory = v }
-
         private var targetId: TargetId? = null
         fun targetId(v: TargetId?) =
             apply { targetId = v }
@@ -135,7 +130,7 @@ class GenerationState private constructor(
         fun build() =
             GenerationState(
                 project, builderFactory, module, bindingContext, files, configuration,
-                generateDeclaredClassFilter, codegenFactory, targetId,
+                generateDeclaredClassFilter, targetId,
                 moduleName, outDirectory, onIndependentPartCompilationEnd, wantsDiagnostics,
                 jvmBackendClassResolver, isIrBackend, ignoreErrors,
                 diagnosticReporter ?: DiagnosticReporterFactory.createReporter(),