Reviewers: rossberg,

https://codereview.chromium.org/11369151/diff/1/src/array.js
File src/array.js (right):

https://codereview.chromium.org/11369151/diff/1/src/array.js#newcode444
src/array.js:444: delete this[n];
This change is required for proper operation, and is the proper ordering
per the spec:

http://ecma-international.org/ecma-262/5.1/#sec-15.4.4.6

Description:
Minimal implementation and tests of observable array methods

Bail out of any special-casing in array methods.
Further optimization is possible, but can be left for later.


Please review this at https://codereview.chromium.org/11369151/

SVN Base: http://v8.googlecode.com/svn/branches/bleeding_edge

Affected files:
  M src/array.js
  M src/builtins.cc
  M test/mjsunit/harmony/object-observe.js


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