Rename NestedGraphLens to LegacyNestedGraphLens

The LegacyNestedGraphLens will be replaced by a new NestedGraphLens that has a map `newMethodSignatures` instead of `originalMethodSignatures`.

This way lenses that specify an alpha-renaming does not need to provide an explicit `originalMethodSignatures` mapping.

Bug: 182099754
Change-Id: I7d32d9047efaf742843007beed96ac6714c9a320
diff --git a/src/main/java/com/android/tools/r8/graph/GraphLens.java b/src/main/java/com/android/tools/r8/graph/GraphLens.java
index 9e056df..88c4e98 100644
--- a/src/main/java/com/android/tools/r8/graph/GraphLens.java
+++ b/src/main/java/com/android/tools/r8/graph/GraphLens.java
@@ -280,13 +280,8 @@
       if (typeMap.isEmpty() && methodMap.isEmpty() && fieldMap.isEmpty()) {
         return previousLens;
       }
-      return new NestedGraphLens(
-          typeMap,
-          methodMap,
-          fieldMap,
-          originalMethodSignatures,
-          previousLens,
-          dexItemFactory);
+      return new LegacyNestedGraphLens(
+          typeMap, methodMap, fieldMap, originalMethodSignatures, previousLens, dexItemFactory);
     }
   }
 
diff --git a/src/main/java/com/android/tools/r8/graph/NestedGraphLens.java b/src/main/java/com/android/tools/r8/graph/LegacyNestedGraphLens.java
similarity index 99%
rename from src/main/java/com/android/tools/r8/graph/NestedGraphLens.java
rename to src/main/java/com/android/tools/r8/graph/LegacyNestedGraphLens.java
index 84e2a37..f6720fd 100644
--- a/src/main/java/com/android/tools/r8/graph/NestedGraphLens.java
+++ b/src/main/java/com/android/tools/r8/graph/LegacyNestedGraphLens.java
@@ -22,7 +22,7 @@
  * #mapInvocationType(DexMethod, DexMethod, Type)} if the default name mapping applies, and only
  * invocation type might need to change.
  */
-public class NestedGraphLens extends NonIdentityGraphLens {
+public class LegacyNestedGraphLens extends NonIdentityGraphLens {
 
   protected final DexItemFactory dexItemFactory;
 
@@ -40,7 +40,7 @@
     return false;
   }
 
-  public NestedGraphLens(
+  public LegacyNestedGraphLens(
       Map<DexType, DexType> typeMap,
       Map<DexMethod, DexMethod> methodMap,
       BidirectionalManyToOneRepresentativeMap<DexField, DexField> fieldMap,
diff --git a/src/main/java/com/android/tools/r8/horizontalclassmerging/HorizontalClassMergerGraphLens.java b/src/main/java/com/android/tools/r8/horizontalclassmerging/HorizontalClassMergerGraphLens.java
index 742affa..4a8d718 100644
--- a/src/main/java/com/android/tools/r8/horizontalclassmerging/HorizontalClassMergerGraphLens.java
+++ b/src/main/java/com/android/tools/r8/horizontalclassmerging/HorizontalClassMergerGraphLens.java
@@ -8,7 +8,7 @@
 import com.android.tools.r8.graph.DexField;
 import com.android.tools.r8.graph.DexMethod;
 import com.android.tools.r8.graph.DexType;
-import com.android.tools.r8.graph.NestedGraphLens;
+import com.android.tools.r8.graph.LegacyNestedGraphLens;
 import com.android.tools.r8.ir.conversion.ExtraParameter;
 import com.android.tools.r8.utils.IterableUtils;
 import com.android.tools.r8.utils.collections.BidirectionalManyToOneHashMap;
@@ -25,7 +25,7 @@
 import java.util.Map;
 import java.util.Set;
 
-public class HorizontalClassMergerGraphLens extends NestedGraphLens {
+public class HorizontalClassMergerGraphLens extends LegacyNestedGraphLens {
 
   private final Map<DexMethod, List<ExtraParameter>> methodExtraParameters;
   private final HorizontallyMergedClasses mergedClasses;
diff --git a/src/main/java/com/android/tools/r8/ir/desugar/InterfaceProcessor.java b/src/main/java/com/android/tools/r8/ir/desugar/InterfaceProcessor.java
index b1a0e85..5051001 100644
--- a/src/main/java/com/android/tools/r8/ir/desugar/InterfaceProcessor.java
+++ b/src/main/java/com/android/tools/r8/ir/desugar/InterfaceProcessor.java
@@ -37,9 +37,9 @@
 import com.android.tools.r8.graph.GenericSignature.FieldTypeSignature;
 import com.android.tools.r8.graph.GenericSignature.MethodTypeSignature;
 import com.android.tools.r8.graph.GraphLens;
+import com.android.tools.r8.graph.LegacyNestedGraphLens;
 import com.android.tools.r8.graph.MethodAccessFlags;
 import com.android.tools.r8.graph.MethodCollection;
-import com.android.tools.r8.graph.NestedGraphLens;
 import com.android.tools.r8.graph.ParameterAnnotationsList;
 import com.android.tools.r8.graph.ProgramMethod;
 import com.android.tools.r8.ir.code.Invoke.Type;
@@ -440,7 +440,7 @@
 
   // Specific lens which remaps invocation types to static since all rewrites performed here
   // are to static companion methods.
-  public static class InterfaceProcessorNestedGraphLens extends NestedGraphLens {
+  public static class InterfaceProcessorNestedGraphLens extends LegacyNestedGraphLens {
 
     private BidirectionalManyToManyRepresentativeMap<DexMethod, DexMethod>
         extraOriginalMethodSignatures;
@@ -524,7 +524,7 @@
       return new Builder();
     }
 
-    public static class Builder extends NestedGraphLens.Builder {
+    public static class Builder extends LegacyNestedGraphLens.Builder {
 
       private final MutableBidirectionalOneToOneMap<DexMethod, DexMethod>
           extraOriginalMethodSignatures = new BidirectionalOneToOneHashMap<>();
diff --git a/src/main/java/com/android/tools/r8/ir/optimize/UninstantiatedTypeOptimization.java b/src/main/java/com/android/tools/r8/ir/optimize/UninstantiatedTypeOptimization.java
index 9e508bd..4d51361 100644
--- a/src/main/java/com/android/tools/r8/ir/optimize/UninstantiatedTypeOptimization.java
+++ b/src/main/java/com/android/tools/r8/ir/optimize/UninstantiatedTypeOptimization.java
@@ -14,7 +14,7 @@
 import com.android.tools.r8.graph.DexProgramClass;
 import com.android.tools.r8.graph.DexProto;
 import com.android.tools.r8.graph.DexType;
-import com.android.tools.r8.graph.NestedGraphLens;
+import com.android.tools.r8.graph.LegacyNestedGraphLens;
 import com.android.tools.r8.graph.RewrittenPrototypeDescription;
 import com.android.tools.r8.graph.RewrittenPrototypeDescription.ArgumentInfoCollection;
 import com.android.tools.r8.graph.RewrittenPrototypeDescription.RemovedArgumentInfo;
@@ -49,7 +49,7 @@
     DISALLOW_ARGUMENT_REMOVAL
   }
 
-  public static class UninstantiatedTypeOptimizationGraphLens extends NestedGraphLens {
+  public static class UninstantiatedTypeOptimizationGraphLens extends LegacyNestedGraphLens {
 
     private final AppView<?> appView;
     private final Map<DexMethod, ArgumentInfoCollection> removedArgumentsInfoPerMethod;
diff --git a/src/main/java/com/android/tools/r8/ir/optimize/UnusedArgumentsCollector.java b/src/main/java/com/android/tools/r8/ir/optimize/UnusedArgumentsCollector.java
index ed01d9f..6d18887 100644
--- a/src/main/java/com/android/tools/r8/ir/optimize/UnusedArgumentsCollector.java
+++ b/src/main/java/com/android/tools/r8/ir/optimize/UnusedArgumentsCollector.java
@@ -14,7 +14,7 @@
 import com.android.tools.r8.graph.DexString;
 import com.android.tools.r8.graph.DexType;
 import com.android.tools.r8.graph.GraphLens;
-import com.android.tools.r8.graph.NestedGraphLens;
+import com.android.tools.r8.graph.LegacyNestedGraphLens;
 import com.android.tools.r8.graph.RewrittenPrototypeDescription;
 import com.android.tools.r8.graph.RewrittenPrototypeDescription.ArgumentInfoCollection;
 import com.android.tools.r8.graph.RewrittenPrototypeDescription.RemovedArgumentInfo;
@@ -52,7 +52,7 @@
       new BidirectionalOneToOneHashMap<>();
   private final Map<DexMethod, ArgumentInfoCollection> removedArguments = new IdentityHashMap<>();
 
-  public static class UnusedArgumentsGraphLens extends NestedGraphLens {
+  public static class UnusedArgumentsGraphLens extends LegacyNestedGraphLens {
 
     private final Map<DexMethod, ArgumentInfoCollection> removedArguments;
 
diff --git a/src/main/java/com/android/tools/r8/ir/optimize/enums/EnumUnboxingLens.java b/src/main/java/com/android/tools/r8/ir/optimize/enums/EnumUnboxingLens.java
index 1a5b6bc..4babc20 100644
--- a/src/main/java/com/android/tools/r8/ir/optimize/enums/EnumUnboxingLens.java
+++ b/src/main/java/com/android/tools/r8/ir/optimize/enums/EnumUnboxingLens.java
@@ -9,7 +9,7 @@
 import com.android.tools.r8.graph.DexMethod;
 import com.android.tools.r8.graph.DexType;
 import com.android.tools.r8.graph.GraphLens;
-import com.android.tools.r8.graph.NestedGraphLens;
+import com.android.tools.r8.graph.LegacyNestedGraphLens;
 import com.android.tools.r8.graph.RewrittenPrototypeDescription;
 import com.android.tools.r8.ir.code.Invoke;
 import com.android.tools.r8.utils.BooleanUtils;
@@ -22,7 +22,7 @@
 import java.util.Map;
 import java.util.Set;
 
-class EnumUnboxingLens extends NestedGraphLens {
+class EnumUnboxingLens extends LegacyNestedGraphLens {
 
   private final Map<DexMethod, RewrittenPrototypeDescription> prototypeChangesPerMethod;
   private final Set<DexType> unboxedEnums;
diff --git a/src/main/java/com/android/tools/r8/ir/optimize/enums/EnumUnboxingRewriter.java b/src/main/java/com/android/tools/r8/ir/optimize/enums/EnumUnboxingRewriter.java
index eed5089..828d7d9 100644
--- a/src/main/java/com/android/tools/r8/ir/optimize/enums/EnumUnboxingRewriter.java
+++ b/src/main/java/com/android/tools/r8/ir/optimize/enums/EnumUnboxingRewriter.java
@@ -21,8 +21,8 @@
 import com.android.tools.r8.graph.DexProgramClass;
 import com.android.tools.r8.graph.DexType;
 import com.android.tools.r8.graph.GenericSignature.MethodTypeSignature;
+import com.android.tools.r8.graph.LegacyNestedGraphLens;
 import com.android.tools.r8.graph.MethodAccessFlags;
-import com.android.tools.r8.graph.NestedGraphLens;
 import com.android.tools.r8.graph.ParameterAnnotationsList;
 import com.android.tools.r8.graph.ProgramMethod;
 import com.android.tools.r8.ir.analysis.type.ArrayTypeElement;
@@ -72,7 +72,7 @@
   private final DexItemFactory factory;
   private final EnumDataMap unboxedEnumsData;
   private final UnboxedEnumMemberRelocator relocator;
-  private NestedGraphLens enumUnboxingLens;
+  private LegacyNestedGraphLens enumUnboxingLens;
 
   private final Map<DexMethod, DexEncodedMethod> utilityMethods = new ConcurrentHashMap<>();
 
@@ -128,7 +128,7 @@
             ENUM_UNBOXING_UTILITY_METHOD_PREFIX + "zeroCheckMessage");
   }
 
-  public void setEnumUnboxingLens(NestedGraphLens enumUnboxingLens) {
+  public void setEnumUnboxingLens(LegacyNestedGraphLens enumUnboxingLens) {
     this.enumUnboxingLens = enumUnboxingLens;
   }
 
diff --git a/src/main/java/com/android/tools/r8/ir/optimize/staticizer/ClassStaticizerGraphLens.java b/src/main/java/com/android/tools/r8/ir/optimize/staticizer/ClassStaticizerGraphLens.java
index f66bf8f..396ffc8 100644
--- a/src/main/java/com/android/tools/r8/ir/optimize/staticizer/ClassStaticizerGraphLens.java
+++ b/src/main/java/com/android/tools/r8/ir/optimize/staticizer/ClassStaticizerGraphLens.java
@@ -7,12 +7,12 @@
 import com.android.tools.r8.graph.AppView;
 import com.android.tools.r8.graph.DexField;
 import com.android.tools.r8.graph.DexMethod;
-import com.android.tools.r8.graph.NestedGraphLens;
+import com.android.tools.r8.graph.LegacyNestedGraphLens;
 import com.android.tools.r8.ir.code.Invoke.Type;
 import com.android.tools.r8.utils.collections.BidirectionalOneToOneMap;
 import com.google.common.collect.ImmutableMap;
 
-class ClassStaticizerGraphLens extends NestedGraphLens {
+class ClassStaticizerGraphLens extends LegacyNestedGraphLens {
 
   ClassStaticizerGraphLens(
       AppView<?> appView,
diff --git a/src/main/java/com/android/tools/r8/optimize/MemberRebindingLens.java b/src/main/java/com/android/tools/r8/optimize/MemberRebindingLens.java
index 4310236..f2830ad 100644
--- a/src/main/java/com/android/tools/r8/optimize/MemberRebindingLens.java
+++ b/src/main/java/com/android/tools/r8/optimize/MemberRebindingLens.java
@@ -4,7 +4,7 @@
 
 package com.android.tools.r8.optimize;
 
-import static com.android.tools.r8.graph.NestedGraphLens.mapVirtualInterfaceInvocationTypes;
+import static com.android.tools.r8.graph.LegacyNestedGraphLens.mapVirtualInterfaceInvocationTypes;
 
 import com.android.tools.r8.graph.AppView;
 import com.android.tools.r8.graph.DexField;
diff --git a/src/main/java/com/android/tools/r8/optimize/PublicizerLens.java b/src/main/java/com/android/tools/r8/optimize/PublicizerLens.java
index 9a29509..27fdc51 100644
--- a/src/main/java/com/android/tools/r8/optimize/PublicizerLens.java
+++ b/src/main/java/com/android/tools/r8/optimize/PublicizerLens.java
@@ -8,14 +8,14 @@
 import com.android.tools.r8.graph.DexEncodedMethod;
 import com.android.tools.r8.graph.DexMethod;
 import com.android.tools.r8.graph.GraphLens;
-import com.android.tools.r8.graph.NestedGraphLens;
+import com.android.tools.r8.graph.LegacyNestedGraphLens;
 import com.android.tools.r8.ir.code.Invoke.Type;
 import com.android.tools.r8.utils.collections.EmptyBidirectionalOneToOneMap;
 import com.google.common.collect.ImmutableMap;
 import com.google.common.collect.Sets;
 import java.util.Set;
 
-final class PublicizerLens extends NestedGraphLens {
+final class PublicizerLens extends LegacyNestedGraphLens {
 
   private final AppView<?> appView;
   private final Set<DexMethod> publicizedMethods;
diff --git a/src/main/java/com/android/tools/r8/repackaging/RepackagingLens.java b/src/main/java/com/android/tools/r8/repackaging/RepackagingLens.java
index 8ac9320..d0f6c2f 100644
--- a/src/main/java/com/android/tools/r8/repackaging/RepackagingLens.java
+++ b/src/main/java/com/android/tools/r8/repackaging/RepackagingLens.java
@@ -10,7 +10,7 @@
 import com.android.tools.r8.graph.DexMethod;
 import com.android.tools.r8.graph.DexReference;
 import com.android.tools.r8.graph.DexType;
-import com.android.tools.r8.graph.NestedGraphLens;
+import com.android.tools.r8.graph.LegacyNestedGraphLens;
 import com.android.tools.r8.shaking.AppInfoWithLiveness;
 import com.android.tools.r8.utils.IterableUtils;
 import com.android.tools.r8.utils.collections.BidirectionalOneToOneHashMap;
@@ -20,7 +20,7 @@
 import com.google.common.collect.HashBiMap;
 import java.util.Map;
 
-public class RepackagingLens extends NestedGraphLens {
+public class RepackagingLens extends LegacyNestedGraphLens {
 
   private final BiMap<DexType, DexType> originalTypes;
   private final Map<String, String> packageRenamings;
diff --git a/src/main/java/com/android/tools/r8/shaking/VerticalClassMergerGraphLens.java b/src/main/java/com/android/tools/r8/shaking/VerticalClassMergerGraphLens.java
index 7c6f295..adc2ca0 100644
--- a/src/main/java/com/android/tools/r8/shaking/VerticalClassMergerGraphLens.java
+++ b/src/main/java/com/android/tools/r8/shaking/VerticalClassMergerGraphLens.java
@@ -12,7 +12,7 @@
 import com.android.tools.r8.graph.DexProto;
 import com.android.tools.r8.graph.DexType;
 import com.android.tools.r8.graph.GraphLens;
-import com.android.tools.r8.graph.NestedGraphLens;
+import com.android.tools.r8.graph.LegacyNestedGraphLens;
 import com.android.tools.r8.graph.RewrittenPrototypeDescription;
 import com.android.tools.r8.graph.classmerging.VerticallyMergedClasses;
 import com.android.tools.r8.ir.code.Invoke.Type;
@@ -52,7 +52,7 @@
 // invocation will hit the same implementation as the original super.m() call.
 //
 // For the invocation "invoke-virtual A.m()" in B.m2, this graph lens will return the method B.m.
-public class VerticalClassMergerGraphLens extends NestedGraphLens {
+public class VerticalClassMergerGraphLens extends LegacyNestedGraphLens {
 
   interface GraphLensLookupResultProvider {
 
diff --git a/src/main/java/com/android/tools/r8/synthesis/SyntheticFinalization.java b/src/main/java/com/android/tools/r8/synthesis/SyntheticFinalization.java
index 27ec751..9f57f6d 100644
--- a/src/main/java/com/android/tools/r8/synthesis/SyntheticFinalization.java
+++ b/src/main/java/com/android/tools/r8/synthesis/SyntheticFinalization.java
@@ -19,7 +19,7 @@
 import com.android.tools.r8.graph.DexType;
 import com.android.tools.r8.graph.GraphLens;
 import com.android.tools.r8.graph.GraphLens.NonIdentityGraphLens;
-import com.android.tools.r8.graph.NestedGraphLens;
+import com.android.tools.r8.graph.LegacyNestedGraphLens;
 import com.android.tools.r8.graph.PrunedItems;
 import com.android.tools.r8.graph.TreeFixerBase;
 import com.android.tools.r8.ir.code.NumberGenerator;
@@ -69,7 +69,7 @@
     }
   }
 
-  public static class SyntheticFinalizationGraphLens extends NestedGraphLens {
+  public static class SyntheticFinalizationGraphLens extends LegacyNestedGraphLens {
 
     private SyntheticFinalizationGraphLens(
         GraphLens previous,