Unify the stack layout for construct frames

src/mips/frames-mips.h

Index: src/mips/frames-mips.h
diff --git a/src/mips/frames-mips.h b/src/mips/frames-mips.h
index 633a887b5b3e7c7e5c020fda038122bc7e3e98b2..7716c950a9d6f285c5b6f445af31c05bb2c22a7e 100644
--- a/src/mips/frames-mips.h
+++ b/src/mips/frames-mips.h
@@ -182,13 +182,12 @@ class ArgumentsAdaptorFrameConstants : public AllStatic {
 class ConstructFrameConstants : public AllStatic {
  public:
   // FP-relative.
-  static const int kImplicitReceiverOffset = -6 * kPointerSize;
-  static const int kConstructorOffset      = -5 * kPointerSize;
+  static const int kImplicitReceiverOffset = -5 * kPointerSize;
   static const int kLengthOffset           = -4 * kPointerSize;
   static const int kCodeOffset = StandardFrameConstants::kExpressionsOffset;
 
   static const int kFrameSize =
-      StandardFrameConstants::kFixedFrameSize + 4 * kPointerSize;
+      StandardFrameConstants::kFixedFrameSize + 3 * kPointerSize;
 };