Revert "JS templates"

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

Index: sdk/lib/_internal/compiler/implementation/js_backend/runtime_types.dart
diff --git a/sdk/lib/_internal/compiler/implementation/js_backend/runtime_types.dart b/sdk/lib/_internal/compiler/implementation/js_backend/runtime_types.dart
index 1b26dc04087466e5ee5d4ed71e3d354aa4decb78..db58f56287c49c0a8183091c35929c5eaf9a45ba 100644
--- a/sdk/lib/_internal/compiler/implementation/js_backend/runtime_types.dart
+++ b/sdk/lib/_internal/compiler/implementation/js_backend/runtime_types.dart
@@ -537,7 +537,7 @@ class RuntimeTypes {
             return type.toString();
         }).toList();
       }
-      return js('function(#) { return # }', [parameters, encoding]);
+      return js.fun(parameters, js.return_(encoding));
     }
   }
 
@@ -548,9 +548,12 @@ class RuntimeTypes {
     if (contextClass != null) {
       JavaScriptBackend backend = compiler.backend;
       String contextName = backend.namer.getNameOfClass(contextClass);
-      return js('function () { return #(#, #, #); }',
-          [ backend.namer.elementAccess(backend.getComputeSignature()),
-              encoding, this_, js.string(contextName) ]);
+      List<jsAst.Expression> arguments =
+          <jsAst.Expression>[encoding, this_, js.string(contextName)];
+      return js.fun([], js.return_(
+          new jsAst.Call(
+              backend.namer.elementAccess(backend.getComputeSignature()),
+              arguments)));
     } else {
       return encoding;
     }
@@ -635,7 +638,7 @@ class TypeRepresentationGenerator extends DartTypeVisitor {
   }
 
   jsAst.Expression getJavaScriptClassName(Element element) {
-    return namer.elementAccess(backend.getImplementationClass(element));
+    return js(namer.isolateAccess(backend.getImplementationClass(element)));
   }
 
   visit(DartType type) {
@@ -870,10 +873,10 @@ class Substitution {
     jsAst.Expression value =
         rti.getSubstitutionRepresentation(arguments, use);
     if (isFunction) {
-      Iterable<jsAst.Expression> formals = parameters.toList().map(declaration);
-      return js('function(#) { return # }', [formals, value]);
+      List<String> formals = parameters.toList().map(declaration).toList();
+      return js.fun(formals, js.return_(value));
     } else if (ensureIsFunction) {
-      return js('function() { return # }', value);
+      return js.fun([], js.return_(value));
     } else {
       return value;
     }