Use count-based profiling exclusively.

src/runtime-profiler.cc

Index: src/runtime-profiler.cc
diff --git a/src/runtime-profiler.cc b/src/runtime-profiler.cc
index 599e235c3925915fbb8f90bd5ed469d83290fb5b..262cd1d582de28735d0458249eddd3d70743dd2d 100644
--- a/src/runtime-profiler.cc
+++ b/src/runtime-profiler.cc
@@ -196,16 +196,9 @@ void RuntimeProfiler::AttemptOnStackReplacement(JSFunction* function) {
 
   // Get the stack check stub code object to match against.  We aren't
   // prepared to generate it, but we don't expect to have to.
-  bool found_code = false;
   Code* stack_check_code = NULL;
-  if (FLAG_count_based_interrupts) {
-    InterruptStub interrupt_stub;
-    found_code = interrupt_stub.FindCodeInCache(&stack_check_code, isolate_);
-  } else  // NOLINT
-  {  // NOLINT
-    StackCheckStub check_stub;
-    found_code = check_stub.FindCodeInCache(&stack_check_code, isolate_);
-  }
+  InterruptStub interrupt_stub;
+  bool found_code = interrupt_stub.FindCodeInCache(&stack_check_code, isolate_);
   if (found_code) {
     Code* replacement_code =
         isolate_->builtins()->builtin(Builtins::kOnStackReplacement);
@@ -379,12 +372,6 @@ void RuntimeProfiler::OptimizeNow() {
 }
 
 
-void RuntimeProfiler::NotifyTick() {
-  if (FLAG_count_based_interrupts) return;
-  isolate_->stack_guard()->RequestRuntimeProfilerTick();
-}
-
-
 void RuntimeProfiler::SetUp() {
   ASSERT(has_been_globally_set_up_);
   if (!FLAG_watch_ic_patching) {