Treat default command line argument properly.

In SkCommandLineFlags, if the client sets a default value
of multiple arguments (e.g. "arg0 arg1 ..."), set
the actual defaults to all of those arguments separately
(i.e. an array with [0] == "arg0", [1] == "arg1", ...),
rather than as one string (i.e. [0] == "arg0 arg1 ...").

Remove the hack that worked around this bug.

Also move the increasingly complicated implementation of
SkFlagInfo::CreateStringFlag into the cpp file.

BUG=https://code.google.com/p/skia/issues/detail?id=1237

Review URL: https://codereview.chromium.org/14366034

git-svn-id: http://skia.googlecode.com/svn/trunk@8845 2bbb7eff-a529-9590-31e7-b0007b416f81
3 files changed