Fix CanvasPixelArray's operator[] for the wrapping js dom

client/dom/idl/dart/dart.idl

 
 // This file introduces / supplements and forces Dart declarations.
 
 module default {
   NamedNodeMap implements sequence<Node>;
   NodeList implements sequence<Node>;
   HTMLCollection implements sequence<Node>;
   MediaList implements sequence<DOMString>;
   StyleSheetList implements sequence<StyleSheet>;
   TouchList implements sequence<Touch>;
@@ skipping 93 matching lines @@
     [Suppressed, StrictTypeChecking, Custom] void getUniform();
 
     any getVertexAttrib(in unsigned long index, in unsigned long pname) raises(DOMException);
     [Suppressed, StrictTypeChecking, Custom] void getVertexAttrib();
   };
 }
 
 
 
 module canvas {
-  interface CanvasPixelArray {
-    int item(in int index);
-  };
-
   // TODO(dstockwell): Define these manually.
   [Supplemental]
   interface Float32Array {
     [Suppressed] void set();
   };
   [Supplemental]
   interface Float64Array {
     [Suppressed] void set();
   };
   [Supplemental]
@@ skipping 30 matching lines @@
   };
   [Supplemental]
   interface IDBIndex {
     [DartName=getObject] IDBRequest get(in IDBKey key);
   };
   [Supplemental]
   interface IDBObjectStore {
     [DartName=getObject] IDBRequest get(in IDBKey key);
   };
 };