Fix for Bug 50726 "Save extension list and "winning" prefs from extensions"

base/values.cc

Index: base/values.cc
diff --git a/base/values.cc b/base/values.cc
index cd0f6a81eef3737fde57fbbb9a022494fe80c94a..c6a377f63f0c386e3cca0dffcd9d8be26143d4e5 100644
--- a/base/values.cc
+++ b/base/values.cc
@@ -133,6 +133,13 @@ bool Value::Equals(const Value* other) const {
   return other->IsType(TYPE_NULL);
 }
 
+// static
+bool Value::Equals(const Value* a, const Value* b) {
+  if ((a == NULL) && (b == NULL)) return true;
+  if ((a == NULL) ^  (b == NULL)) return false;
+  return a->Equals(b);
+}
+
 Value::Value(ValueType type) : type_(type) {
 }