Harden runtime functions

Part 1 of many.

R=dslomov@chromium.org

Review URL: https://codereview.chromium.org/239313002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20836 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/v8conversions.h

@@ -75,9 +75,8 @@ inline bool TryNumberToSize(Isolate* isolate,
   SealHandleScope shs(isolate);
   if (number->IsSmi()) {
     int value = Smi::cast(number)->value();
-    ASSERT(
-        static_cast<unsigned>(Smi::kMaxValue)
-          <= std::numeric_limits<size_t>::max());
+    ASSERT(static_cast<unsigned>(Smi::kMaxValue)
+           <= std::numeric_limits<size_t>::max());
     if (value >= 0) {
       *result = static_cast<size_t>(value);
       return true;