dart2js: In minified mode shorter getter and setter names.

sdk/lib/_internal/compiler/implementation/js_backend/namer.dart

Index: sdk/lib/_internal/compiler/implementation/js_backend/namer.dart
diff --git a/sdk/lib/_internal/compiler/implementation/js_backend/namer.dart b/sdk/lib/_internal/compiler/implementation/js_backend/namer.dart
index fa6f91e0a59498dc43e58a6202955993b3772208..8865c6953ea824e9f03e69039265250153ed30a1 100644
--- a/sdk/lib/_internal/compiler/implementation/js_backend/namer.dart
+++ b/sdk/lib/_internal/compiler/implementation/js_backend/namer.dart
@@ -174,6 +174,9 @@ class Namer implements ClosureNamer {
 
   final String CURRENT_ISOLATE = r'$';
 
+  final String getterPrefix = r'get$';
+  final String setterPrefix = r'set$';
+
   /**
    * Map from top-level or static elements to their unique identifiers provided
    * by [getName].
@@ -344,10 +347,10 @@ class Namer implements ClosureNamer {
   String invocationName(Selector selector) {
     if (selector.isGetter()) {
       String proposedName = privateName(selector.library, selector.name);
-      return 'get\$${getMappedInstanceName(proposedName)}';
+      return '$getterPrefix${getMappedInstanceName(proposedName)}';
     } else if (selector.isSetter()) {
       String proposedName = privateName(selector.library, selector.name);
-      return 'set\$${getMappedInstanceName(proposedName)}';
+      return '$setterPrefix${getMappedInstanceName(proposedName)}';
     } else {
       SourceString name = selector.name;
       if (selector.kind == SelectorKind.OPERATOR
@@ -411,26 +414,26 @@ class Namer implements ClosureNamer {
     // therefore be derived from the instance field-name.
     LibraryElement library = element.getLibrary();
     String name = getMappedInstanceName(privateName(library, element.name));
-    return 'set\$$name';
+    return '$setterPrefix$name';
   }
 
   String setterNameFromAccessorName(String name) {
     // We dynamically create setters from the field-name. The setter name must
     // therefore be derived from the instance field-name.
-    return 'set\$$name';
+    return '$setterPrefix$name';
   }
 
   String publicGetterName(SourceString name) {
     // We dynamically create getters from the field-name. The getter name must
     // therefore be derived from the instance field-name.
     String fieldName = getMappedInstanceName(name.slowToString());
-    return 'get\$$fieldName';
+    return '$getterPrefix$fieldName';
   }
 
   String getterNameFromAccessorName(String name) {
     // We dynamically create getters from the field-name. The getter name must
     // therefore be derived from the instance field-name.
-    return 'get\$$name';
+    return '$getterPrefix$name';
   }
 
   String getterName(Element element) {
@@ -438,7 +441,7 @@ class Namer implements ClosureNamer {
     // therefore be derived from the instance field-name.
     LibraryElement library = element.getLibrary();
     String name = getMappedInstanceName(privateName(library, element.name));
-    return 'get\$$name';
+    return '$getterPrefix$name';
   }
 
   String getMappedGlobalName(String proposedName) {
@@ -647,7 +650,7 @@ class Namer implements ClosureNamer {
 
   String getLazyInitializerName(Element element) {
     assert(Elements.isStaticOrTopLevelField(element));
-    return getMappedGlobalName("get\$${getName(element)}");
+    return getMappedGlobalName("$getterPrefix${getName(element)}");
   }
 
   String isolatePropertiesAccess(Element element) {