Refactor JavaScriptFrame::function() to return a JSFunction* and remove associated casts.

src/liveedit.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 1603 matching lines @@
 
 
 // Check an activation against list of functions. If there is a function
 // that matches, its status in result array is changed to status argument value.
 static bool CheckActivation(Handle<JSArray> shared_info_array,
                             Handle<JSArray> result,
                             StackFrame* frame,
                             LiveEdit::FunctionPatchabilityStatus status) {
   if (!frame->is_java_script()) return false;
 
-  Handle<JSFunction> function(
-      JSFunction::cast(JavaScriptFrame::cast(frame)->function()));
+  Handle<JSFunction> function(JavaScriptFrame::cast(frame)->function());
 
   Isolate* isolate = shared_info_array->GetIsolate();
   int len = GetArrayLength(shared_info_array);
   for (int i = 0; i < len; i++) {
     Object* element = shared_info_array->GetElementNoExceptionThrown(i);
     CHECK(element->IsJSValue());
     Handle<JSValue> jsvalue(JSValue::cast(element));
     Handle<SharedFunctionInfo> shared =
         UnwrapSharedFunctionInfoFromJSValue(jsvalue);
 
@@ skipping 489 matching lines @@
 
 bool LiveEditFunctionTracker::IsActive(Isolate* isolate) {
   return false;
 }
 
 #endif  // ENABLE_DEBUGGER_SUPPORT
 
 
 
 } }  // namespace v8::internal