Allow non integer device scale factors in render widget

Currently we force device scale factors to integers in render widget preventing us from experimenting with non integer default device scale factors. This patch fixes that.

BUG=None
TEST=Use a default device scale factor of 1.5


Review URL: https://chromiumcodereview.appspot.com/10537128

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@142951 0039d316-1c4b-4281-b951-d872f2087c98
3 files changed