Made Isolate a mandatory parameter for everything Handle-related.

src/assembler.cc

Index: src/assembler.cc
diff --git a/src/assembler.cc b/src/assembler.cc
index b4958f5b392dc798e6fdd07c09818acc7b7c1371..612be580969e53e40db6fa0f1745408ed24e1b11 100644
--- a/src/assembler.cc
+++ b/src/assembler.cc
@@ -1142,18 +1142,21 @@ ExternalReference ExternalReference::new_space_allocation_limit_address(
 }
 
 
-ExternalReference ExternalReference::handle_scope_level_address() {
-  return ExternalReference(HandleScope::current_level_address());
+ExternalReference ExternalReference::handle_scope_level_address(
+    Isolate* isolate) {
+  return ExternalReference(HandleScope::current_level_address(isolate));
 }
 
 
-ExternalReference ExternalReference::handle_scope_next_address() {
-  return ExternalReference(HandleScope::current_next_address());
+ExternalReference ExternalReference::handle_scope_next_address(
+    Isolate* isolate) {
+  return ExternalReference(HandleScope::current_next_address(isolate));
 }
 
 
-ExternalReference ExternalReference::handle_scope_limit_address() {
-  return ExternalReference(HandleScope::current_limit_address());
+ExternalReference ExternalReference::handle_scope_limit_address(
+    Isolate* isolate) {
+  return ExternalReference(HandleScope::current_limit_address(isolate));
 }