Handlify and convert string.length to new API-style accessor.

src/accessors.h

Index: src/accessors.h
diff --git a/src/accessors.h b/src/accessors.h
index 83a847222b44e69a8341bbaac08bdcf95aaa5dac..db506cef976e7724b4da21fd6dbd632b3a24e119 100644
--- a/src/accessors.h
+++ b/src/accessors.h
@@ -43,7 +43,6 @@ namespace internal {
   V(FunctionArguments)              \
   V(FunctionCaller)                 \
   V(ArrayLength)                    \
-  V(StringLength)                   \
   V(ScriptSource)                   \
   V(ScriptName)                     \
   V(ScriptId)                       \
@@ -57,6 +56,9 @@ namespace internal {
   V(ScriptEvalFromScriptPosition)   \
   V(ScriptEvalFromFunctionName)
 
+#define ACCESSOR_INFO_LIST(V)       \
+  V(StringLength)                   \
+
 // Accessors contains all predefined proxy accessors.
 
 class Accessors : public AllStatic {
@@ -67,11 +69,30 @@ class Accessors : public AllStatic {
   ACCESSOR_DESCRIPTOR_LIST(ACCESSOR_DESCRIPTOR_DECLARATION)
 #undef ACCESSOR_DESCRIPTOR_DECLARATION
 
+#define ACCESSOR_INFO_DECLARATION(name)                   \
+  static void name##Getter(                               \
+      v8::Local<v8::String> name,                         \
+      const v8::PropertyCallbackInfo<v8::Value>& info);   \
+  static void name##Setter(                               \
+      v8::Local<v8::String> name,                         \
+      v8::Local<v8::Value> value,                         \
+      const v8::PropertyCallbackInfo<void>& info);   \
+  static Handle<AccessorInfo> name##Info(                 \
+      Isolate* isolate,                                   \
+      PropertyAttributes attributes);
+  ACCESSOR_INFO_LIST(ACCESSOR_INFO_DECLARATION)
+#undef ACCESSOR_INFO_DECLARATION
+
   enum DescriptorId {
 #define ACCESSOR_DESCRIPTOR_DECLARATION(name) \
     k##name,
   ACCESSOR_DESCRIPTOR_LIST(ACCESSOR_DESCRIPTOR_DECLARATION)
 #undef ACCESSOR_DESCRIPTOR_DECLARATION
+#define ACCESSOR_INFO_DECLARATION(name) \
+    k##name##Getter, \
+    k##name##Setter,
+  ACCESSOR_INFO_LIST(ACCESSOR_INFO_DECLARATION)
+#undef ACCESSOR_INFO_DECLARATION
     descriptorCount
   };
 
@@ -92,7 +113,6 @@ class Accessors : public AllStatic {
                                       Handle<String> name,
                                       int* object_offset);
 
-
  private:
   // Accessor functions only used through the descriptor.
   static MaybeObject* FunctionSetPrototype(Isolate* isolate,