Split TickSample and Sampler.

test/cctest/trace-extension.cc

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 #include "test/cctest/trace-extension.h"
 
-#include "src/profiler/sampler.h"
+#include "src/profiler/tick-sample.h"
 #include "src/vm-state-inl.h"
 #include "test/cctest/cctest.h"
 
 namespace v8 {
 namespace internal {
 
 const char* TraceExtension::kSource =
     "native function trace();"
     "native function js_trace();"
     "native function js_entry_sp();"
@@ skipping 120 matching lines @@
   v8::HandleScope scope(args.GetIsolate());
   const Address js_entry_sp = GetJsEntrySp();
   CHECK(js_entry_sp);
   CompileRun("js_entry_sp();");
   CHECK_EQ(js_entry_sp, GetJsEntrySp());
 }
 
 
 }  // namespace internal
 }  // namespace v8