Clean up some random TODO(titzer)s and spelling mistakes.

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 0b644c7583261a7496e32cf9532b2a7f8d0b8216..744c46cc90c3717db68c9d40d821dcf3c88cf4e9 100644
--- a/test/cctest/test-cpu-profiler.cc
+++ b/test/cctest/test-cpu-profiler.cc
@@ -604,7 +604,7 @@ static const char* hot_deopt_no_frame_entry_test_source =
 //     2     2    (program) [-1]
 //     6     6    (garbage collector) [-1]
 //
-// The test checks no FP ranges are present in a deoptimized funcion.
+// The test checks no FP ranges are present in a deoptimized function.
 // If 'foo' has no ranges the samples falling into the prologue will miss the
 // 'start' function on the stack, so 'foo' will be attached to the (root).
 TEST(HotDeoptNoFrameEntry) {