HeapProfiler: for the test purposes we would like to trace object movements.
When we have an untracked allocations we need to fix it.
It is a bit tricky process due to lack of logging.
I added FLAG_heap_profiler_trace_objects that enables log for object movements.
Drive by fix: with help of logging I found a bug in LeftTrim method for FixedArray.
BUG=none
R=svenpanne@chromium.org, yurys@chromium.org
Committed: https://code.google.com/p/v8/source/detail?r=17258
Review URL: https://codereview.chromium.org/
27694004
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17263
ce2b1a6d-e550-0410-aec6-
3dcde31c8c00