Cleanup FooSpace::VerifyObject and ElementsAccessor::Validate.

R=danno@chromium.org

Review URL: https://codereview.chromium.org/23273004

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@16259 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Pass checked values to HLoadNamedField, removing the need for extra type-check field.

R=titzer@chromium.org

Review URL: https://chromiumcodereview.appspot.com/22831003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@16260 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Allow both "--no<flag>" and "--no-<flag>" to disable <flag>.

We shouldn't need to know whether to use --no or --no- as prefix.
The latter is more intuitive and also what chromium uses.

R=machenbach@chromium.org
BUG=

Review URL: https://codereview.chromium.org/22851009

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@16261 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Fix "Hole" leak in TryBuildConsolidatedElementLoad

R=verwaest@chromium.org

Review URL: https://codereview.chromium.org/23361007

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@16262 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Fix migration checks and extend them to the Scavenger.

R=hpayer@chromium.org

Review URL: https://codereview.chromium.org/23060018

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@16265 ce2b1a6d-e550-0410-aec6-3dcde31c8c00