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 fdb6399da5b704e224e3c6b0ca2b778a86bfa3cf..199fa0d46af9a1b66a5a78a98073a71a70ac37df 100644
--- a/src/assembler.cc
+++ b/src/assembler.cc
@@ -1157,18 +1157,21 @@ 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));
 }