Fix some out-of-line constant pool garbage collection bugs.

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 55951b58c47d9c6ba8c542e1e3e81dbe09e89e64..d9c0c798a34d2ab0491679be9c597398d302bd8e 100644
--- a/src/mips/frames-mips.h
+++ b/src/mips/frames-mips.h
@@ -161,12 +161,9 @@ class EntryFrameConstants : public AllStatic {
 
 class ExitFrameConstants : public AllStatic {
  public:
-  // See some explanation in MacroAssembler::EnterExitFrame.
-  // This marks the top of the extra allocated stack space.
-  static const int kStackSpaceOffset = -3 * kPointerSize;
+  static const int kFrameSize = 2 * kPointerSize;
 
   static const int kCodeOffset = -2 * kPointerSize;
-
   static const int kSPOffset = -1 * kPointerSize;
 
   // The caller fields are below the frame pointer on the stack.