Revert of Array.prototype.unshift builtin improvements (patchset #3 id:40001...
Revert of Array.prototype.unshift builtin improvements (patchset #3 id:40001 of https://codereview.chromium.org/1311343002/ ) Reason for revert: https://codereview.chromium.org/1315823004/ Original issue's description: > Array.prototype.unshift builtin improvements > > Moving unshift to ElementAccessor and increasing the range of arguments > handled directly in C++, namely directly supporting FastDoubleElementsKind. > This should yield a factor 19 speedup for unshift on fast double arrays. > > BUG= > > Committed: https://crrev.com/bf6764e6c1197e50ae148755488307a423b1d9b4 > Cr-Commit-Position: refs/heads/master@{#30347} TBR=yangguo@chromium.org NOPRESUBMIT=true NOTREECHECKS=true NOTRY=true BUG= Review URL: https://codereview.chromium.org/1311363003 Cr-Commit-Position: refs/heads/master@{#30350}
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