Move class/member computation from CodegenEnqueuer to CodegenWorldBuilder.

pkg/compiler/lib/src/common/backend_api.dart

Index: pkg/compiler/lib/src/common/backend_api.dart
diff --git a/pkg/compiler/lib/src/common/backend_api.dart b/pkg/compiler/lib/src/common/backend_api.dart
index 64cadf3d86697a47398c7ce4769b0d974e7bcb70..a4972aaf0551581a4b6adfa1cf6466f88692ad1c 100644
--- a/pkg/compiler/lib/src/common/backend_api.dart
+++ b/pkg/compiler/lib/src/common/backend_api.dart
@@ -151,15 +151,6 @@ abstract class Backend extends Target {
   void registerTypeVariableBoundsSubtypeCheck(
       DartType typeArgument, DartType bound) {}
 
-  /// Called to register that an instantiated generic class has a call method.
-  /// Any backend specific [WorldImpact] of this is returned.
-  ///
-  /// Note: The [callMethod] is registered even thought it doesn't reference
-  /// the type variables.
-  WorldImpact registerCallMethodWithFreeTypeVariables(Element callMethod,
-          {bool forResolution}) =>
-      const WorldImpact();
-
   /// Called to instruct the backend to register that a closure exists for a
   /// function on an instantiated generic class. Any backend specific
   /// [WorldImpact] of this is returned.
@@ -175,10 +166,6 @@ abstract class Backend extends Target {
   /// specific [WorldImpact] of this is returned.
   WorldImpact registerGetOfStaticFunction() => const WorldImpact();
 
-  /// Called to enable support for `noSuchMethod`. Any backend specific
-  /// [WorldImpact] of this is returned.
-  WorldImpact enableNoSuchMethod() => const WorldImpact();
-
   /// Returns whether or not `noSuchMethod` support has been enabled.
   bool get enabledNoSuchMethod => false;