Rewriting SetOwnPropertyIgnoreAttributes using the LookupIterator

BUG=
R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/468493002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@23163 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Remove the extensibility flag. Instead just rely on hidden_string as indication.

BUG=
R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/466033002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@23164 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Always assume SetOwnPropertyIgnoreAttributes to be CERTAINLY_NOT_FROM_KEYED

BUG=
R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/463963002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@23165 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Rewrite DeleteProperty using the LookupIterator

BUG=
R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/468073002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@23166 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Rename the configuration flags of the LookupIterator

BUG=
R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/469733002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@23167 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Use LookupIterator for CompileLoadInterceptor and delete Object::Lookup

BUG=
R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/466283003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@23168 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Use LookupIterator in SetAccessor / DefineAccessor and remove "search_hidden_prototypes" from LookupOwn

BUG=
R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/468163002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@23169 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Merge remote-tracking branch 'upstream/master'