Revert r14252 as it broke --prof for some cases

test/cctest/test-cpu-profiler.cc

Index: test/cctest/test-cpu-profiler.cc
diff --git a/test/cctest/test-cpu-profiler.cc b/test/cctest/test-cpu-profiler.cc
index 2eece46230eb565fd17c815980384457fc383ee3..40b5b79125a7f22fa0c2db853a2e9ec4b50820a6 100644
--- a/test/cctest/test-cpu-profiler.cc
+++ b/test/cctest/test-cpu-profiler.cc
@@ -64,6 +64,7 @@ static void EnqueueTickSampleEvent(ProfilerEventsProcessor* proc,
                                    i::Address frame3 = NULL) {
   i::TickSample* sample = proc->TickSampleEvent();
   sample->pc = frame1;
+  sample->tos = frame1;
   sample->frames_count = 0;
   if (frame2 != NULL) {
     sample->stack[0] = frame2;
@@ -238,6 +239,7 @@ TEST(Issue1398) {
 
   i::TickSample* sample = processor.TickSampleEvent();
   sample->pc = ToAddress(0x1200);
+  sample->tos = 0;
   sample->frames_count = i::TickSample::kMaxFramesCount;
   for (int i = 0; i < sample->frames_count; ++i) {
     sample->stack[i] = ToAddress(0x1200);