IR: rename DeclarationFactory to InnerClassesSupport, move out of context

Methods of the common interface DeclarationFactory were only used in
lowerings in InnerClassesLowering, which were used in JVM and JS, not
Native. Therefore, it makes sense to have this as a separate interface
and pass its implementation to these lowerings directly, instead of
declaring it in the common context (which is not going to be implemented
in Native).

compiler/ir/backend.wasm/src/org/jetbrains/kotlin/backend/wasm/WasmBackendContext.kt

@@ -7,7 +7,7 @@ package org.jetbrains.kotlin.backend.wasm
 
 import org.jetbrains.kotlin.backend.common.ir.Ir
 import org.jetbrains.kotlin.backend.common.ir.Symbols
-import org.jetbrains.kotlin.backend.js.JsDeclarationFactory
+import org.jetbrains.kotlin.ir.backend.js.lower.JsInnerClassesSupport
 import org.jetbrains.kotlin.config.CompilerConfiguration
 import org.jetbrains.kotlin.descriptors.ModuleDescriptor
 import org.jetbrains.kotlin.descriptors.PackageFragmentDescriptor
@@ -52,7 +52,7 @@ class WasmBackendContext(
 
     override val mapping = JsMapping()
 
-    override val declarationFactory = JsDeclarationFactory(mapping)
+    val innerClassesSupport = JsInnerClassesSupport(mapping)
 
     val objectToGetInstanceFunction = mutableMapOf<IrClassSymbol, IrSimpleFunction>()
     override val internalPackageFqn = FqName("kotlin.wasm")
@@ -100,6 +100,3 @@ class DescriptorlessExternalPackageFragmentSymbol : IrExternalPackageFragmentSym
     override val signature: IdSignature
         get() = error("Operation is unsupported")
 }
-
-
-

compiler/ir/backend.wasm/src/org/jetbrains/kotlin/backend/wasm/WasmLoweringPhases.kt

@@ -149,20 +149,20 @@ private val localClassExtractionPhase = makeWasmModulePhase(
 )
 
 private val innerClassesLoweringPhase = makeWasmModulePhase(
-    ::InnerClassesLowering,
+    { context -> InnerClassesLowering(context, context.innerClassesSupport) },
     name = "InnerClassesLowering",
     description = "Capture outer this reference to inner class"
 )
 
 private val innerClassesMemberBodyLoweringPhase = makeWasmModulePhase(
-    ::InnerClassesMemberBodyLowering,
+    { context -> InnerClassesMemberBodyLowering(context, context.innerClassesSupport) },
     name = "InnerClassesMemberBody",
     description = "Replace `this` with 'outer this' field references",
     prerequisite = setOf(innerClassesLoweringPhase)
 )
 
 private val innerClassConstructorCallsLoweringPhase = makeWasmModulePhase(
-    ::InnerClassConstructorCallsLowering,
+    { context -> InnerClassConstructorCallsLowering(context, context.innerClassesSupport) },
     name = "InnerClassConstructorCallsLowering",
     description = "Replace inner class constructor invocation"
 )