Revert r119897 "Fixed 'singleton' behavior of filebrowser"
Revert r119897 "Fixed 'singleton' behavior of filebrowser"

TBR=zvorygin@chromium.org
BUG=none
TEST=none

Review URL: https://chromiumcodereview.appspot.com/9309002

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@119903 0039d316-1c4b-4281-b951-d872f2087c98

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