Revert 14916: Mark test-cpu-profiler/SampleWhenFrameIsNotSetup as flaky on MIPS simulator
Revert 14915: CPU profiler should support names of accessors set via v8::Object::SetAccessor

Due to Windows failures

R=rossberg@chromium.org

Review URL: https://codereview.chromium.org/16335005

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@14918 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Make assertion scopes thread safe.

R=svenpanne@chromium.org
BUG=

Review URL: https://chromiumcodereview.appspot.com/15691017

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@14919 ce2b1a6d-e550-0410-aec6-3dcde31c8c00