[runtime] No need to carry around the creation context for JSBoundFunctions.

test/cctest/test-api.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 19655 matching lines @@
               .FromJust());
     bound_function1 = CompileRun("foo.bind(1)").As<Function>();
     bound_function2 =
         CompileRun("Function.prototype.bind.call(foo, 2)").As<Function>();
   }
 
   Local<Context> other_context = Context::New(CcTest::isolate());
   Context::Scope scope(other_context);
   CHECK(bound_function1->CreationContext() == context1);
   CheckContextId(bound_function1, 1);
-  CHECK(bound_function2->CreationContext() == context2);
+  CHECK(bound_function2->CreationContext() == context1);
   CheckContextId(bound_function2, 1);
 }
 
 
 void HasOwnPropertyIndexedPropertyGetter(
     uint32_t index,
     const v8::PropertyCallbackInfo<v8::Value>& info) {
   if (index == 42) info.GetReturnValue().Set(v8_str("yes"));
 }
 
@@ skipping 4655 matching lines @@
   CHECK(proxy->GetTarget()->SameValue(target));
   CHECK(proxy->GetHandler()->SameValue(handler));
 
   proxy->Revoke();
   CHECK(proxy->IsProxy());
   CHECK(!target->IsProxy());
   CHECK(proxy->IsRevoked());
   CHECK(proxy->GetTarget()->SameValue(target));
   CHECK(proxy->GetHandler()->IsNull());
 }