Spelling fixes e to i.

pkg/compiler/lib/src/js_emitter/runtime_type_generator.dart

Index: pkg/compiler/lib/src/js_emitter/runtime_type_generator.dart
diff --git a/pkg/compiler/lib/src/js_emitter/runtime_type_generator.dart b/pkg/compiler/lib/src/js_emitter/runtime_type_generator.dart
index 692676b58445d4f8d4c11e4d0109e089604a7e89..7ec2c9afcfd6639f89b964ddb42e0abae6408da3 100644
--- a/pkg/compiler/lib/src/js_emitter/runtime_type_generator.dart
+++ b/pkg/compiler/lib/src/js_emitter/runtime_type_generator.dart
@@ -298,7 +298,7 @@ class RuntimeTypeGenerator {
       if (call != null && call.isFunction) {
         FunctionElement callFunction = call;
         // A superclass might already implement the Function interface. In such
-        // a case, we can avoid emiting the is test here.
+        // a case, we can avoid emitting the is test here.
         if (!cls.superclass.implementsFunction(_commonElements)) {
           _generateInterfacesIsTests(_commonElements.functionClass,
               generateIsTest, generateSubstitution, generated);