Provide named links to code objects in heap snapshot.

test/cctest/test-heap-profiler.cc

 // Copyright 2011 the V8 project authors. All rights reserved.
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 // 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
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@@ skipping 1945 matching lines @@
 
   CHECK(transition_info->GetHeapValue()->IsArray());
   v8::Handle<v8::Array> array = v8::Handle<v8::Array>::Cast(
       transition_info->GetHeapValue());
   // Verify the array is "a" in the code above.
   CHECK_EQ(3, array->Length());
   CHECK_EQ(v8::Integer::New(3), array->Get(v8::Integer::New(0)));
   CHECK_EQ(v8::Integer::New(2), array->Get(v8::Integer::New(1)));
   CHECK_EQ(v8::Integer::New(1), array->Get(v8::Integer::New(2)));
 }
+
+
+TEST(JSFunctionHasCodeLink) {
+  LocalContext env;
+  v8::HandleScope scope(env->GetIsolate());
+  v8::HeapProfiler* heap_profiler = env->GetIsolate()->GetHeapProfiler();
+  CompileRun("function foo(x, y) { return x + y; }\n");
+  const v8::HeapSnapshot* snapshot =
+      heap_profiler->TakeHeapSnapshot(v8_str("snapshot"));
+  CHECK(ValidateSnapshot(snapshot, 3));

[yurys, 2013/07/17 10:24:01]

Could you make 3 a default parameter please.

+  const v8::HeapGraphNode* global = GetGlobalObject(snapshot);
+  const v8::HeapGraphNode* foo_func =
+      GetProperty(global, v8::HeapGraphEdge::kProperty, "foo");
+  CHECK_NE(NULL, foo_func);
+  const v8::HeapGraphNode* code =
+      GetProperty(foo_func, v8::HeapGraphEdge::kInternal, "code");
+  CHECK_NE(NULL, code);
+}