Don't delete the user profile directory for tests that ran with --user-data-dir.
Don't delete the user profile directory for tests that ran with --user-data-dir.

Committing for rsimha@chromium.org. Original review: http://codereview.chromium.org/1739007/show

Added a boolean field to class ChromeTestSuite, called "created_user_data_dir_". It defaults to false, and is set to true if no value is passed for --user_data_dir via command line. If the flag is false, the directory specified by the user is not deleted after test execution, and if it is true, the directory is deleted, as it always has been.

Note: user_data_dir is emptied before test execution -- this behavior remains unaltered.

BUG=42374
TEST=User profile directory still exists after running a test with --user-data-dir.
Review URL: http://codereview.chromium.org/1755009

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@45673 0039d316-1c4b-4281-b951-d872f2087c98

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