Merge V8 5.8.283.32

Test: Build V8 for arm, arm64, x86, x86_64, mips, mips64 and
set a PAC script from the UI on bullhead

Change-Id: I7cc773b5daca34d869e768a1deebae3876f2dfac
diff --git a/src/arguments.h b/src/arguments.h
index d5d2c02..1d91b20 100644
--- a/src/arguments.h
+++ b/src/arguments.h
@@ -6,7 +6,7 @@
 #define V8_ARGUMENTS_H_
 
 #include "src/allocation.h"
-#include "src/objects-inl.h"
+#include "src/objects.h"
 #include "src/tracing/trace-event.h"
 
 namespace v8 {
@@ -41,7 +41,8 @@
                                         index * kPointerSize));
   }
 
-  template <class S> Handle<S> at(int index) {
+  template <class S = Object>
+  Handle<S> at(int index) {
     Object** value = &((*this)[index]);
     // This cast checks that the object we're accessing does indeed have the
     // expected type.