clean up generic methods in resolution

pkg/analyzer/lib/src/dart/element/member.dart

Index: pkg/analyzer/lib/src/dart/element/member.dart
diff --git a/pkg/analyzer/lib/src/dart/element/member.dart b/pkg/analyzer/lib/src/dart/element/member.dart
index 95997758a2b7f229d69142a2bd559e37411fafd9..75dcee658f0a985e06d6165f8d13dac7c86365f0 100644
--- a/pkg/analyzer/lib/src/dart/element/member.dart
+++ b/pkg/analyzer/lib/src/dart/element/member.dart
@@ -339,15 +339,21 @@ class FieldMember extends VariableMember implements FieldElement {
 }
 
 /**
+ * Deprecated: this type is no longer used. Use
+ * [MethodInvocation.staticInvokeType] to get the instantiated type of a generic
+ * method invocation.
+ *
  * An element of a generic function, where the type parameters are known.
  */
 // TODO(jmesserly): the term "function member" is a bit weird, but it allows
 // a certain consistency.
+@deprecated
 class FunctionMember extends ExecutableMember implements FunctionElement {
   /**
    * Initialize a newly created element to represent a function, based on the
    * [baseElement], with the corresponding function [type].
    */
+  @deprecated
   FunctionMember(FunctionElement baseElement, [DartType type])
       : super(baseElement, null, type);
 
@@ -674,12 +680,6 @@ class ParameterMember extends VariableMember
   @override
   SourceRange get visibleRange => baseElement.visibleRange;
 
-  // TODO(jmesserly): this equality is broken. It should consider the defining
-  // type as well, otherwise we're dropping the substitution.
-  @override
-  bool operator ==(Object object) =>
-      object is ParameterMember && baseElement == object.baseElement;
-
   @override
   accept(ElementVisitor visitor) => visitor.visitParameterElement(this);