- If no comparison function is given for %TypedArray%.prototype.sort,
sort the typedarray using std::sort in C++. This gets 20 times more
benchmark score in Float64Array.
- Move ValidateTypedArray in builtin-typedarray.cc to static inline
method of JSTypedArray class.

BUG=v8:5953

Review-Url: https://codereview.chromium.org/2693043009
Cr-Commit-Position: refs/heads/master@{#43427}