src: remove kJSFrame

Like the comment says, these were removed a long time ago.

Author: kvakil

src/llv8-constants.cc

@@ -510,8 +510,6 @@ void Frame::Load() {
   kExitFrame = LoadConstant("frametype_ExitFrame");
   kInternalFrame = LoadConstant("frametype_InternalFrame");
   kConstructFrame = LoadConstant("frametype_ConstructFrame");
-  // NOTE: The JavaScript frame type was removed in V8 6.3.158.
-  kJSFrame = LoadConstant("frametype_JavaScriptFrame");
   kOptimizedFrame = LoadConstant("frametype_OptimizedFrame");
   kStubFrame = LoadConstant("frametype_StubFrame");
 }

src/llv8-constants.h

@@ -494,7 +494,6 @@ class Frame : public Module {
   int64_t kExitFrame;
   int64_t kInternalFrame;
   int64_t kConstructFrame;
-  int64_t kJSFrame;
   int64_t kOptimizedFrame;
   int64_t kStubFrame;
 

src/printer.cc

@@ -49,8 +49,7 @@ std::string Printer::Stringify(v8::JSFrame js_frame, Error& err) {
       return "<constructor>";
     } else if (value == llv8_->frame()->kStubFrame) {
       return "<stub>";
-    } else if (value != llv8_->frame()->kJSFrame &&
-               value != llv8_->frame()->kOptimizedFrame) {
+    } else if (value != llv8_->frame()->kOptimizedFrame) {
       err = Error::Failure("Unknown frame marker %" PRId64, value);
       return std::string();
     }