Fixing cleanup of dart:html annotation generation.

tools/dom/templates/html/impl/impl_EventTarget.darttemplate

Index: tools/dom/templates/html/impl/impl_EventTarget.darttemplate
diff --git a/tools/dom/templates/html/impl/impl_EventTarget.darttemplate b/tools/dom/templates/html/impl/impl_EventTarget.darttemplate
index a6c438395381cbc66ab31f2b6a7b54640109e97b..aa32ca2b2beb91319a3a1b1794a582c65d313df7 100644
--- a/tools/dom/templates/html/impl/impl_EventTarget.darttemplate
+++ b/tools/dom/templates/html/impl/impl_EventTarget.darttemplate
@@ -10,7 +10,7 @@ part of html;
  * Events can either be accessed by string name (using the indexed getter) or by
  * getters exposed by subclasses. Use the getters exposed by subclasses when
  * possible for better compile-time type checks.
- * 
+ *
  * Using an indexed getter:
  *     events['mouseover'].add((e) => print("Mouse over!"));
  *
@@ -64,7 +64,7 @@ class EventListenerList {
     _ptr.$dom_removeEventListener(_type, listener, useCapture);
   }
 }
-$ANNOTATIONS
+
 /**
  * Base class for all browser objects that support events.
  *
@@ -72,8 +72,8 @@ $ANNOTATIONS
  * [$dom_addEventListener], [$dom_dispatchEvent], and
  * [$dom_removeEventListener]) for compile-time type checks and a more concise
  * API.
- */ 
-class $CLASSNAME$EXTENDS$IMPLEMENTS$NATIVESPEC {
+ */
+$(ANNOTATIONS)class $CLASSNAME$EXTENDS$IMPLEMENTS$NATIVESPEC {
 
   @DomName('EventTarget.addEventListener, EventTarget.removeEventListener, EventTarget.dispatchEvent')
   Events get on => new Events(this);