Makes tab icon/throbber paint in the right position for rtl. I broke this when I refactored the rtl handling to base_tab. Since base_tab handles the switch tab doesn't need to handle it too.
Makes tab icon/throbber paint in the right position for rtl. I broke
this when I refactored the rtl handling to base_tab. Since base_tab
handles the switch tab doesn't need to handle it too.

BUG=45388
TEST=see bug

Review URL: http://codereview.chromium.org/2749009

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@49456 0039d316-1c4b-4281-b951-d872f2087c98

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