Unify the stack layout for construct frames

src/mips64/frames-mips64.h

Index: src/mips64/frames-mips64.h
diff --git a/src/mips64/frames-mips64.h b/src/mips64/frames-mips64.h
index be732ef5f75827e3881b290beedda0586d6bf0bd..b92efc99f6fb626dcc6c220560d81b6fa478cff9 100644
--- a/src/mips64/frames-mips64.h
+++ b/src/mips64/frames-mips64.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;
 };