C++ profiles processor: put under #ifdef and fix issues.

src/cpu-profiler.cc

Index: src/cpu-profiler.cc
diff --git a/src/cpu-profiler.cc b/src/cpu-profiler.cc
index d16c17f4c0582413993a80f7c9fff4dcbc3086b3..4a215469fb2ddb551209ddcd4313a0717d3f8dbe 100644
--- a/src/cpu-profiler.cc
+++ b/src/cpu-profiler.cc
@@ -32,6 +32,7 @@
 namespace v8 {
 namespace internal {
 
+#ifdef ENABLE_CPP_PROFILES_PROCESSOR
 
 static const int kEventsBufferSize = 256*KB;
 static const int kTickSamplesBufferChunkSize = 64*KB;
@@ -163,7 +164,7 @@ bool ProfilerEventsProcessor::ProcessCodeEvent(unsigned* dequeue_order) {
 bool ProfilerEventsProcessor::ProcessTicks(unsigned dequeue_order) {
   while (true) {
     const TickSampleEventRecord* rec =
-        reinterpret_cast<TickSampleEventRecord*>(ticks_buffer_.StartDequeue());
+        TickSampleEventRecord::cast(ticks_buffer_.StartDequeue());
     if (rec == NULL) return false;
     if (rec->order == dequeue_order) {
       generator_->RecordTickSample(rec->sample);
@@ -195,5 +196,6 @@ void ProfilerEventsProcessor::Run() {
   while (ProcessTicks(dequeue_order) && ProcessCodeEvent(&dequeue_order)) { }
 }
 
+#endif  // ENABLE_CPP_PROFILES_PROCESSOR
 
 } }  // namespace v8::internal