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1) Add a dependency to the rule that copies the files.
2) Change the directories to have lower case names.  This doesn't matter
on windows which is case insensitive and where some directories are already lower case (e.g., themes and locales).  Mac will probably have to add
some gyp code to move the files to the right place in the bundle.

Review URL: http://codereview.chromium.org/100223


git-svn-id: svn://svn.chromium.org/chrome/trunk/src@15015 0039d316-1c4b-4281-b951-d872f2087c98