Move StackGuard::InterruptRequested into StackLimitCheck.

src/isolate.h

Index: src/isolate.h
diff --git a/src/isolate.h b/src/isolate.h
index 5339bcce5a0b4f656f6a85bd19f56f442c1c406b..e2187be3f9f05ee48de99971ee8aaba47366d466 100644
--- a/src/isolate.h
+++ b/src/isolate.h
@@ -1478,11 +1478,17 @@ class StackLimitCheck BASE_EMBEDDED {
   explicit StackLimitCheck(Isolate* isolate) : isolate_(isolate) { }
 
   // Use this to check for stack-overflows in C++ code.
-  inline bool HasOverflowed() const {
+  bool HasOverflowed() const {
     StackGuard* stack_guard = isolate_->stack_guard();
     return GetCurrentStackPosition() < stack_guard->real_climit();
   }
 
+  // Use this to check for interrupt request in C++ code.
+  bool InterruptRequested() {
+    StackGuard* stack_guard = isolate_->stack_guard();
+    return GetCurrentStackPosition() < stack_guard->climit();
+  }
+
   // Use this to check for stack-overflow when entering runtime from JS code.
   bool JsHasOverflowed(uintptr_t gap = 0) const;