Unify deoptimizer for JavaScript frames.

src/deoptimizer.h

Index: src/deoptimizer.h
diff --git a/src/deoptimizer.h b/src/deoptimizer.h
index d4d3c48698a10d0d4fdd9b53d567f5bd45e76cd0..b624cc26a1102f0f69498a2c9b78344ae490365f 100644
--- a/src/deoptimizer.h
+++ b/src/deoptimizer.h
@@ -407,6 +407,10 @@ class Deoptimizer : public Malloced {
   // from the input frame's double registers.
   void CopyDoubleRegisters(FrameDescription* output_frame);
 
+  // Determines whether the input frame contains alignment padding by looking
+  // at the dynamic alignment state slot inside the frame.
+  bool HasAlignmentPadding(JSFunction* function);
+
   Isolate* isolate_;
   JSFunction* function_;
   Code* compiled_code_;