Thread the current isolate through a few places, avoiding Isolate::Current().

src/mips/regexp-macro-assembler-mips.cc

Index: src/mips/regexp-macro-assembler-mips.cc
diff --git a/src/mips/regexp-macro-assembler-mips.cc b/src/mips/regexp-macro-assembler-mips.cc
index cb210fed04fc88233af4e8d2e23751b813248014..330ff2b8d1e5e20a28f4e9b77e47fc47742619ba 100644
--- a/src/mips/regexp-macro-assembler-mips.cc
+++ b/src/mips/regexp-macro-assembler-mips.cc
@@ -1056,7 +1056,7 @@ int RegExpMacroAssemblerMIPS::CheckStackGuardState(Address* return_address,
   ASSERT(*return_address <=
       re_code->instruction_start() + re_code->instruction_size());
 
-  MaybeObject* result = Execution::HandleStackGuardInterrupt();
+  MaybeObject* result = Execution::HandleStackGuardInterrupt(isolate);
 
   if (*code_handle != re_code) {  // Return address no longer valid.
     int delta = code_handle->address() - re_code->address();