Start new design for interceptors and implement String.charCodeAt with it.

sdk/lib/_internal/compiler/implementation/resolution/members.dart

Index: sdk/lib/_internal/compiler/implementation/resolution/members.dart
===================================================================
--- sdk/lib/_internal/compiler/implementation/resolution/members.dart	(revision 14732)
+++ sdk/lib/_internal/compiler/implementation/resolution/members.dart	(working copy)
@@ -1857,12 +1857,14 @@
   }
 
   visitLiteralString(LiteralString node) {
+    world.registerSpecialInstantiatedClass(compiler.jsStringClass);

[ahe, 2012/11/12 13:24:11]

Perhaps the resolver should just say that a String was instantiated and have the
backend figure out that it needs to enqueue this class?

[ngeoffray, 2012/11/13 11:45:16]

Done.

   }
 
   visitLiteralNull(LiteralNull node) {
   }
 
   visitStringJuxtaposition(StringJuxtaposition node) {
+    world.registerSpecialInstantiatedClass(compiler.jsStringClass);
     node.visitChildren(this);
   }
 
@@ -2074,6 +2076,7 @@
   }
 
   visitStringInterpolation(StringInterpolation node) {
+    world.registerSpecialInstantiatedClass(compiler.jsStringClass);
     node.visitChildren(this);
   }
 
@@ -2610,6 +2613,7 @@
       !identical(lib, compiler.coreLibrary) &&
       !identical(lib, compiler.coreImplLibrary) &&
       !identical(lib, compiler.jsHelperLibrary) &&
+      !identical(lib, compiler.interceptorsLibrary) &&
       (identical(type.element, compiler.dynamicClass) ||
        identical(type.element, compiler.boolClass) ||
        identical(type.element, compiler.numClass) ||