Remove most superfluous getter arguments from dart2js.

dart/lib/compiler/implementation/typechecker.dart

Index: dart/lib/compiler/implementation/typechecker.dart
diff --git a/dart/lib/compiler/implementation/typechecker.dart b/dart/lib/compiler/implementation/typechecker.dart
index b01a79391b6938e9e1b5ef9f32ec0e889aa2d39d..b88fd9d86903c636a4c5a21bb6695e078c2c2391 100644
--- a/dart/lib/compiler/implementation/typechecker.dart
+++ b/dart/lib/compiler/implementation/typechecker.dart
@@ -4,7 +4,7 @@
 
 class TypeCheckerTask extends CompilerTask {
   TypeCheckerTask(Compiler compiler) : super(compiler);
-  String get name() => "Type checker";
+  String get name => "Type checker";
 
   static final bool LOG_FAILURES = false;
 
@@ -46,7 +46,7 @@ class TypeVariableType implements Type {
 
   TypeVariableType(this.element);
 
-  SourceString get name() => element.name;
+  SourceString get name => element.name;
 
   Type unalias(Compiler compiler) => this;
 
@@ -58,9 +58,9 @@ class TypeVariableType implements Type {
  */
 class StatementType implements Type {
   final String stringName;
-  Element get element() => null;
+  Element get element => null;
 
-  SourceString get name() => new SourceString(stringName);
+  SourceString get name => new SourceString(stringName);
 
   const StatementType(this.stringName);
 
@@ -80,7 +80,7 @@ class StatementType implements Type {
 
 class VoidType implements Type {
   const VoidType(this.element);
-  SourceString get name() => element.name;
+  SourceString get name => element.name;
   final VoidElement element;
 
   Type unalias(Compiler compiler) => this;
@@ -95,7 +95,7 @@ class InterfaceType implements Type {
   const InterfaceType(this.element,
                       [this.arguments = const EmptyLink<Type>()]);
 
-  SourceString get name() => element.name;
+  SourceString get name => element.name;
 
   Type unalias(Compiler compiler) => this;
 
@@ -130,7 +130,7 @@ class FunctionType implements Type {
     return sb.toString();
   }
 
-  SourceString get name() => const SourceString('Function');
+  SourceString get name => const SourceString('Function');
 
   int computeArity() {
     int arity = 0;
@@ -153,7 +153,7 @@ class TypedefType implements Type {
   const TypedefType(this.element,
       [this.typeArguments = const EmptyLink<Type>()]);
 
-  SourceString get name() => element.name;
+  SourceString get name => element.name;
 
   Type unalias(Compiler compiler) {
     // TODO(ahe): This should be [ensureResolved].