Reland "Linux perf tool support update + refactoring." (r22118)

Reland "Linux perf tool support update + refactoring." (r22118)

This disables the perf support in Android because of build problems with librt (should be fixable with a bit of effort, but priority is low).

BUG=
R=yangguo@chromium.org

Committed: https://code.google.com/p/v8/source/detail?r=22146

[Jarin, 2014-07-02 08:02:37]

Could you take another look?

[Yang, 2014-07-02 08:05:20]

On 2014/07/02 08:02:37, jarin wrote:
> Could you take another look?

lgtm

[Jarin, 2014-07-02 08:39:06]

Committed patchset #2 manually as r22146 (presubmit successful).