Ensure deopt entries have no relocation information.

src/assembler.h

Index: src/assembler.h
diff --git a/src/assembler.h b/src/assembler.h
index 890ef69dbbdb37d0473ffc903649bef24e688bba..9e3c397229c2f871c79a7d9306033d6dd2120868 100644
--- a/src/assembler.h
+++ b/src/assembler.h
@@ -409,6 +409,12 @@ class RelocInfo BASE_EMBEDDED {
   // debugger.
   INLINE(bool IsPatchedDebugBreakSlotSequence());
 
+#ifdef DEBUG
+  // Check whether the given code contains relocation information that
+  // either is position-relative or movable by the garbage collector.
+  static bool RequiresRelocation(const CodeDesc& desc);
+#endif
+
 #ifdef ENABLE_DISASSEMBLER
   // Printing
   static const char* RelocModeName(Mode rmode);