JavaScript to Value bridge.

base/values.cc

Index: base/values.cc
diff --git a/base/values.cc b/base/values.cc
index c6a377f63f0c386e3cca0dffcd9d8be26143d4e5..b06df125dd1fc2a6e5d8a969e31baddaea31de51 100644
--- a/base/values.cc
+++ b/base/values.cc
@@ -119,6 +119,10 @@ bool Value::GetAsString(string16* out_value) const {
   return false;
 }
 
+bool Value::GetAsList(ListValue** out_value) {
+  return false;
+}
+
 Value* Value::DeepCopy() const {
   // This method should only be getting called for null Values--all subclasses
   // need to provide their own implementation;.
@@ -961,6 +965,12 @@ bool ListValue::Insert(size_t index, Value* in_value) {
   return true;
 }
 
+bool ListValue::GetAsList(ListValue** out_value) {
+  if (out_value)
+    *out_value = this;
+  return true;
+}
+
 Value* ListValue::DeepCopy() const {
   ListValue* result = new ListValue;