Revert 124622 - Change kB to KB for consistency.
Revert 124622 - Change kB to KB for consistency.

Reverting as it breaks BytesFormattingTest.FormatBytes

BUG=chromium-os:22812
TEST=Open task manager or downloads, and observe KB instead of kB.
Review URL: https://chromiumcodereview.appspot.com/9490008

TBR=dgozman@chromium.org
Review URL: https://chromiumcodereview.appspot.com/9572006

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@124623 0039d316-1c4b-4281-b951-d872f2087c98

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