Rename [call$...] properties to [$...] in compiled code.

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 00a0bdbb873479e6391b62daec13aea5269f3435..7a33d97692815cf9fa685560c7dac7eac3a63bf4 100644
--- a/sdk/lib/_internal/compiler/implementation/js_backend/namer.dart
+++ b/sdk/lib/_internal/compiler/implementation/js_backend/namer.dart
@@ -221,6 +221,7 @@ class Namer implements ClosureNamer {
   final String getterPrefix = r'get$';
   final String setterPrefix = r'set$';
   final String metadataField = '@';
+  final String callPrefix = 'call';
   final String callCatchAllName = r'call$catchAll';
   final String reflectableField = r'$reflectable';
   final String defaultValuesField = r'$defaultValues';
@@ -290,6 +291,7 @@ class Namer implements ClosureNamer {
     switch (name) {
       case 'GETTER_PREFIX': return getterPrefix;
       case 'SETTER_PREFIX': return setterPrefix;
+      case 'CALL_PREFIX': return callPrefix;
       case 'CALL_CATCH_ALL': return callCatchAllName;
       case 'REFLECTABLE': return reflectableField;
       case 'CLASS_DESCRIPTOR_PROPERTY': return classDescriptorProperty;
@@ -383,8 +385,16 @@ class Namer implements ClosureNamer {
       name = Elements.reconstructConstructorNameSourceString(element);
     }
     FunctionSignature signature = element.functionSignature;
-    String methodName =
-        '${privateName(library, name)}\$${signature.parameterCount}';
+    // We don't mangle the closure invoking function name because it
+    // is generated by string concatenation in applyFunction from
+    // js_helper.dart. To keep code size down, we potentially shorten
+    // the prefix though.
+    String methodName;
+    if (name == closureInvocationSelectorName) {
+      methodName = '$callPrefix\$${signature.parameterCount}';
+    } else {
+      methodName = '${privateName(library, name)}\$${signature.parameterCount}';
+    }
     if (signature.optionalParametersAreNamed &&
         !signature.optionalParameters.isEmpty) {
       StringBuffer buffer = new StringBuffer();
@@ -403,10 +413,11 @@ class Namer implements ClosureNamer {
     assert(!isPrivateName(name));
     // We don't mangle the closure invoking function name because it
     // is generated by string concatenation in applyFunction from
-    // js_helper.dart.
-    String proposedName = '$name\$$arity';
-    if (name == closureInvocationSelectorName) return proposedName;
-    return getMappedInstanceName(proposedName);
+    // js_helper.dart. To keep code size down, we potentially shorten
+    // the prefix though.
+    if (name == closureInvocationSelectorName) return '$callPrefix\$$arity';
+
+    return getMappedInstanceName('$name\$$arity');
   }
 
   String invocationName(Selector selector) {
@@ -432,9 +443,9 @@ class Namer implements ClosureNamer {
       String suffix = '\$${selector.argumentCount}$buffer';
       // We don't mangle the closure invoking function name because it
       // is generated by string concatenation in applyFunction from
-      // js_helper.dart.
+      // js_helper.dart. We potentially shorten the prefix though.
       if (selector.isClosureCall()) {
-        return "$name$suffix";
+        return "$callPrefix$suffix";
       } else {
         String proposedName = privateName(selector.library, name);
         return getMappedInstanceName('$proposedName$suffix');