[chrome-remote-control] Fix web page replay on windows.
[chrome-remote-control] Fix web page replay on windows.

A python script cannot be directly run using subprocess on windows. Instead it
must be passed to a python executable. The sys.executable variable is the
currently running python executable, so this works on all platforms.

Example failure:
http://build.chromium.org/p/chromium.perf/builders/Win7%20GPU%20%28ATI%29%20Perf/builds/5604/steps/scrolling_benchmark/logs/stdio

BUG=None
TEST=None

Review URL: https://codereview.chromium.org/11229050

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@163566 0039d316-1c4b-4281-b951-d872f2087c98

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