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By changing 1.f to 1.0, this allows the inverse contents
scale to cancel out properly in the transformation matrix.

BUG=259154

Review URL: https://chromiumcodereview.appspot.com/23572033

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@221889 0039d316-1c4b-4281-b951-d872f2087c98