Do not call findKotlinClass when loading class annotations

The main change is in AbstractBinaryClassAnnotationAndConstantLoader, where we
no longer perform unnecessary IO operations for classes which are already
loaded to memory

core/deserialization/src/org/jetbrains/kotlin/serialization/deserialization/ErrorReporter.java

@@ -17,7 +17,6 @@
 package org.jetbrains.kotlin.serialization.deserialization;
 
 import org.jetbrains.annotations.NotNull;
-import org.jetbrains.annotations.Nullable;
 import org.jetbrains.kotlin.descriptors.CallableMemberDescriptor;
 import org.jetbrains.kotlin.descriptors.ClassDescriptor;
 import org.jetbrains.kotlin.name.ClassId;
@@ -31,8 +30,6 @@ public interface ErrorReporter {
 
     void reportCannotInferVisibility(@NotNull CallableMemberDescriptor descriptor);
 
-    void reportLoadingError(@NotNull String message, @Nullable Exception exception);
-
     ErrorReporter DO_NOTHING = new ErrorReporter() {
         @Override
         public void reportIncompatibleMetadataVersion(
@@ -47,9 +44,5 @@ public interface ErrorReporter {
         @Override
         public void reportCannotInferVisibility(@NotNull CallableMemberDescriptor descriptor) {
         }
-
-        @Override
-        public void reportLoadingError(@NotNull String message, @Nullable Exception exception) {
-        }
     };
 }

core/deserialization/src/org/jetbrains/kotlin/serialization/deserialization/ProtoContainer.kt

@@ -25,14 +25,16 @@ import org.jetbrains.kotlin.serialization.deserialization.descriptors.BinarySour
 
 sealed class ProtoContainer(
         val nameResolver: NameResolver,
-        val typeTable: TypeTable
+        val typeTable: TypeTable,
+        val source: BinarySource?
 ) {
     class Class(
             val classProto: ProtoBuf.Class,
             nameResolver: NameResolver,
             typeTable: TypeTable,
+            source: BinarySource?,
             val outerClassKind: ClassKind?
-    ) : ProtoContainer(nameResolver, typeTable) {
+    ) : ProtoContainer(nameResolver, typeTable, source) {
         val classId: ClassId = nameResolver.getClassId(classProto.fqName)
 
         val kind: ProtoBuf.Class.Kind = Flags.CLASS_KIND.get(classProto.flags) ?: ProtoBuf.Class.Kind.CLASS
@@ -45,8 +47,8 @@ sealed class ProtoContainer(
             val fqName: FqName,
             nameResolver: NameResolver,
             typeTable: TypeTable,
-            val source: BinarySource?
-    ) : ProtoContainer(nameResolver, typeTable) {
+            source: BinarySource?
+    ) : ProtoContainer(nameResolver, typeTable, source) {
         override fun debugFqName(): FqName = fqName
     }
 

core/deserialization/src/org/jetbrains/kotlin/serialization/deserialization/descriptors/DeserializedClassDescriptor.kt

@@ -73,8 +73,9 @@ class DeserializedClassDescriptor(
     private val constructors = c.storageManager.createLazyValue { computeConstructors() }
     private val companionObjectDescriptor = c.storageManager.createNullableLazyValue { computeCompanionObjectDescriptor() }
 
-    internal val thisAsProtoContainer =
-            ProtoContainer.Class(classProto, c.nameResolver, c.typeTable, (containingDeclaration as? ClassDescriptor)?.kind)
+    internal val thisAsProtoContainer = ProtoContainer.Class(
+            classProto, c.nameResolver, c.typeTable, sourceElement as? BinarySource, (containingDeclaration as? ClassDescriptor)?.kind
+    )
 
     private val annotations =
             if (!Flags.HAS_ANNOTATIONS.get(classProto.flags)) {