A64: Synchronize with r16756.

include/v8.h

Index: include/v8.h
diff --git a/include/v8.h b/include/v8.h
index 7ffddea18283791af2b6a922b3bd690137da858c..dceebebb698315c7ad44145ac0ea7c44c35ed7ac 100644
--- a/include/v8.h
+++ b/include/v8.h
@@ -819,7 +819,7 @@ class V8_EXPORT HandleScope {
  * value.
  */
 template<class T>
-struct Maybe {
+struct V8_EXPORT Maybe {
   Maybe() : has_value(false) {}
   explicit Maybe(T t) : has_value(true), value(t) {}
   Maybe(bool has, T t) : has_value(has), value(t) {}
@@ -2407,11 +2407,11 @@ class PropertyCallbackInfo {
   friend class internal::PropertyCallbackArguments;
   friend class internal::CustomArguments<PropertyCallbackInfo>;
   static const int kThisIndex = 0;
-  static const int kHolderIndex = -1;
-  static const int kDataIndex = -2;
-  static const int kReturnValueIndex = -3;
-  static const int kReturnValueDefaultValueIndex = -4;
-  static const int kIsolateIndex = -5;
+  static const int kDataIndex = -1;
+  static const int kReturnValueIndex = -2;
+  static const int kReturnValueDefaultValueIndex = -3;
+  static const int kIsolateIndex = -4;
+  static const int kHolderIndex = -5;
 
   V8_INLINE PropertyCallbackInfo(internal::Object** args) : args_(args) {}
   internal::Object** args_;