[Interpreter] Add IsInterpreted() to JSFunction and use to fix test-heap tests.

src/ic/ic.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/ic/ic.h"
 
 #include <iostream>
 
 #include "src/accessors.h"
 #include "src/api-arguments-inl.h"
@@ skipping 97 matching lines @@
   // marker = [fp_ + kMarkerOffset];
   // if marker is smi and marker.value == INTERNAL and
   //     the frame's code == builtin(Builtins::kFunctionApply):
   // then print "apply from" and advance one frame
 
   Object* maybe_function =
       Memory::Object_at(fp_ + JavaScriptFrameConstants::kFunctionOffset);
   if (maybe_function->IsJSFunction()) {
     JSFunction* function = JSFunction::cast(maybe_function);
     int code_offset = 0;
-    if (function->code()->is_interpreter_trampoline_builtin()) {
+    if (function->IsInterpreted()) {
       code_offset = InterpretedFrame::GetBytecodeOffset(fp());
     } else {
       code_offset =
           static_cast<int>(pc() - function->code()->instruction_start());
     }
     JavaScriptFrame::PrintFunctionAndOffset(function, function->abstract_code(),
                                             code_offset, stdout, true);
   }
 
   const char* modifier = "";
@@ skipping 3085 matching lines @@
     DCHECK_EQ(LookupIterator::INTERCEPTOR, it.state());
     it.Next();
     ASSIGN_RETURN_FAILURE_ON_EXCEPTION(isolate, result,
                                        Object::GetProperty(&it));
   }
 
   return *result;
 }
 }  // namespace internal
 }  // namespace v8