Make ~/, round, ceil, floor, truncate return ints. Remove toInt.

runtime/vm/intrinsifier.h

Index: runtime/vm/intrinsifier.h
diff --git a/runtime/vm/intrinsifier.h b/runtime/vm/intrinsifier.h
index 395960ddc66e2d4a1f2ea5e98c8de6cf598fce20..bf6ff02cf67e51ce63ce613103cb7a519fa01958 100644
--- a/runtime/vm/intrinsifier.h
+++ b/runtime/vm/intrinsifier.h
@@ -59,7 +59,7 @@ namespace dart {
   V(_Double, get:isNegative, Double_getIsNegative, 54462366)                   \
   V(_Double, _mulFromInteger, Double_mulFromInteger, 1668662807)               \
   V(_Double, .fromInteger, Double_fromInteger, 842078193)                      \
-  V(_Double, toInt, Double_toInt, 362666636)                                   \
+  V(_Double, truncate, Double_truncate, 362666636)                             \
   V(_ObjectArray, ., ObjectArray_Allocate, 577949617)                          \
   V(_ObjectArray, get:length, Array_getLength, 405297088)                      \
   V(_ObjectArray, [], Array_getIndexed, 71937385)                              \