Get rid of a lot of () for getters.

lib/compiler/implementation/js_backend/constant_system_javascript.dart

Index: lib/compiler/implementation/js_backend/constant_system_javascript.dart
diff --git a/lib/compiler/implementation/js_backend/constant_system_javascript.dart b/lib/compiler/implementation/js_backend/constant_system_javascript.dart
index 4c7ecc1509bee8ec35bab727b905028222912af4..5ca980314d10000b1c8b38ae91001e4ef22ae454 100644
--- a/lib/compiler/implementation/js_backend/constant_system_javascript.dart
+++ b/lib/compiler/implementation/js_backend/constant_system_javascript.dart
@@ -29,7 +29,7 @@ class JavaScriptBinaryBitOperation implements BinaryOperation {
   const JavaScriptBinaryBitOperation(this.dartBitOperation);
 
   bool isUserDefinable() => dartBitOperation.isUserDefinable();
-  SourceString get name() => dartBitOperation.name;
+  SourceString get name => dartBitOperation.name;
 
   Constant fold(Constant left, Constant right) {
     // In JavaScript we don't check for -0 and treat it as if it was zero.
@@ -76,7 +76,7 @@ class JavaScriptNegateOperation implements UnaryOperation {
   const JavaScriptNegateOperation();
 
   bool isUserDefinable() => dartNegateOperation.isUserDefinable();
-  SourceString get name() => dartNegateOperation.name;
+  SourceString get name => dartNegateOperation.name;
 
   Constant fold(Constant constant) {
     if (constant.isInt()) {
@@ -95,7 +95,7 @@ class JavaScriptBinaryArithmeticOperation implements BinaryOperation {
   const JavaScriptBinaryArithmeticOperation(this.dartArithmeticOperation);
 
   bool isUserDefinable() => dartArithmeticOperation.isUserDefinable();
-  SourceString get name() => dartArithmeticOperation.name;
+  SourceString get name => dartArithmeticOperation.name;
 
   Constant fold(Constant left, Constant right) {
     Constant result = dartArithmeticOperation.fold(left, right);
@@ -110,7 +110,7 @@ class JavaScriptIdentityOperation implements BinaryOperation {
   const JavaScriptIdentityOperation();
 
   bool isUserDefinable() => dartIdentityOperation.isUserDefinable();
-  SourceString get name() => dartIdentityOperation.name;
+  SourceString get name => dartIdentityOperation.name;
 
   BoolConstant fold(Constant left, Constant right) {
     BoolConstant result = dartIdentityOperation.fold(left, right);