Remove the executable bit from scanner.cc file.

Patch from Thiago Farina <tfarina@chromium.org>.

TBR=yangguo@chromium.org

Review URL: https://codereview.chromium.org/14081021

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@14385 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Print ProfileNode id when dumping CPU profile to console

Node ids are monotonically increasing and looking at them we can
say e.g. when the node was added before another one. We need this
to diagnose sporadic failures of cctest/test-cpu-profiler/CollectCpuProfile

BUG=v8:2628

Review URL: https://codereview.chromium.org/14402014

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@14386 ce2b1a6d-e550-0410-aec6-3dcde31c8c00